It's only fair.

There were once three sisters named Iduna, Ingrid, and Imogen. Naturally, Ingrid was the oldest heir to the kingdom of Arendelle. Each sister was equally clever and beautiful. Ingrid's skin was pale as ice with cold gray eyes. She was strong-headed with the courage of a lion.

Imogen was the middle daughter, having choppy snow-blond hair and glittering brown eyes. She was kind, compassionate, and gentle as the wind. However, Iduna, the youngest child, was plain, having no distinct features. Although, she was clever and cunning, and most of all—

Manipulative.

Iduna had a known secret—she had sacred snow and ice powers. A blessing one may say—or a deathly curse. The folks of Arendelle considered her as an evil enchantress who would bring doom and misery to the kingdom.

When they were still young children, they'd play with glass roses. It was a risky game, one wrong move, then the glass would break.
One day, Ingrid scratched Iduna's palm with the stem of her glass rose. Iduna's hands dripped with blood.

Naturally, Ingrid tried to apologize while Imogen attempted to clean off the blood. Iduna didn't say anything, but silently let her anger bubble under her skin.

So Iduna shattered all of the glass roses. Each of the girls' hands bled, the glass slick with blood.

It was only fair.

~*~*~*~

They eventually grew into fine women, but Ingrid and Iduna got into a heated argument about who should be the heir to the throne. Iduna crossed her pale arms across her chest. "It's not fair, Ingrid. I'm clever enough for the whole kingdom."

"Arendelle needs a strong leader," she retorted, lifting her chin. "I'm the eldest after all."

"You're selfish, that's what you are."

"After Papa dies, I'm the queen, you know this, Iduna." Ingrid laced her fingers in her lap. They were sitting inside the Royal Dining Hall. "Don't be finicky with me, it's a poor choice. It's only fair."

~*~*~*~

They didn't speak to each other for months. Their sisterly relationship was as thin as ice and as fragile as glass. Imogen, the only kind-hearted sister out of all three of them, was concerned.

She went to their father who was on the verge of death. "Hello, Papa."

"My lovely daughter," he croaked in a raspy voice. "How are you?"

"Ingrid and Iduna are arguing again," she sniffled, dropping to Papa's bedside. She always hated how Papa just lay on his deathbed every day, waiting for his life to be taken. Didn't he know how much Imogen needed him? "It's been months since they spoke."

"Your sisters are petty," he grunted. "Everything will be okay, child."

"But what if it doesn't improve?" she cried out, tears stinging her eyes. She was always the emotional one, something she hated about herself. She wasn't as brave or clever as her sister. She licked her pale lips. "What if it worsens by the time that Ingrid is crowned Queen of Arendelle?"

Papa gave away a rough cough, stroking his thin beard. "I suppose it'll be an ongoing issue. Don't fret, Imogen. Perhaps if you force them together, you'll end up with happy results."

"Are you sure?"

"Child, I must confess—I'm sure that today is the day I shall die," Papa said as Imogen gasped. No, she wasn't ready yet. Why must everyone leave her? "I need to die knowing that their relationship will strengthen."

"Okay, Papa," she whispered, burdening herself. "Of course, anything for you."

With that, his eyes shut.

~*~*~*~

Papa's funeral was private and only the three sisters showed up. Ingrid didn't look at their father's casket, muttering to herself. Imogen was drowning herself in loud sobs, crying to her heart's content. Iduna stood still, with no emotion on her face. "Congrats, Ingrid. Seems like you're Queen of Arendelle now, well played. I wouldn't put it past you if you were the one who killed him."

"Iduna!" Imogen gasped, sobbing.

"You're heartless, sister," Ingrid roared, tears stinging the corners of her eyes. The sky was murky and dark. The clouds were voiceless with blotches of gray. "Stone cold, Iduna. I'm so glad that you're not the heir."

"Like you would be better," Iduna scowled.

"Sisters, don't argue!" Imogen demanded, feeling her joy slip away. Why must they always be arguing? It was exhausting at times with no end. Raindrops started to pour as each sister stared into each other's eyes. "Papa's dying wish was that we stick together."

Iduna barked a cruel spittle of laughter. "What a badly wasted dying wish."

"STOP IT!" Ingrid yelled, rain staining her cheeks. "You will have to deal with my ruling, Iduna. Let's face it—you're a terrible ruler. You have no respect for the land, and your outlandish ice powers are horrible for the kingdom—"

"Outlandish ice powers?" Iduna's face stilled. She curled up her fists, smiling. No one could ever make a mockery of her powers. It made her feel special. "Oh, tsk, tsk, Ingrid."

Ingrid swallowed hard. "I didn't mean that—"

"You meant exactly what you said!"

Ice shot out of Iduna's hands. Ingrid and Imgoen backed away, dumbfounded, Iduna had never harmed another being with her abilities. It was unheard of. Ice covered Papa's casket as Imogen gasped. "The c-c-casket!"

"Don't fret, it'll thaw." Iduna's voice was dangerously low. "Eventually."

~*~*~*~

Iduna stood outside in the Royal Garden. She breathed in the dusty, icy winds. She was suddenly disturbed by Ingrid, crossing her arms. Iduna rolled her eyes, spinning around. "Here to apologize, sissy?"

"In your dreams."

"How classy for the queen-to-be." Iduna bent down to pluck a crystal rose, a native flower of Arendelle. It was Iduna's favourite flower because it only took the slightest force for the whole thing to shatter.

It reminded her of the childhood games they'd play. Ah, such a shame.

She crinkled it in her hand, the glass shards seeping into her palm. Blood oozed out.

Ingrid winced while Iduna didn't even flinch. "What do you want, Ingrid?"

"I'm banishing you from Arendelle."

Iduna slowly rose around, tossing a cold look over her shoulder. "Don't play with me."

"I'm not playing this stupid, childish game anymore," Ingrid said, straightening up. "I have reason to believe that you'll commit treason against me. You were always very jealous, Iduna. A nasty trait of yours. You'll end up hurting yourself and the kingdom."

"You can't exile me, I'm part of the Royal Family!"

"That's no excuse."

"I—"

"Leave now," Ingrid said lightly, snarling. They stood nose-to-nose, glaring. Tension radiated from each girl. Their glassy eyes pooled into each other's. "You'll freeze half of the kingdom to death by the time I'll be crowned. You're a witch, Iduna—"

Suddenly, ice snuck up to Ingrid's thigh. The ice consumed her hungrily, like the flames of a fire. Iduna narrowed her eyes as Ingrid screamed for help. Her body turned almost translucent. Iduna shot her bloody hand through Ingrid's chest as she let out a gasp.

Her frozen body shattered into a million pieces of glass, dropping dead to the grass. Ingrid was no more, just frozen remains of glass. Iduna stumbled back, gasping loudly. Did she really just kill her sister?

She smiled. It felt so good—so deserving.

Her mind became crystal-clear, she had to do this. She walked over the patch of grass, the glass crunching under her feet. She went back into the palace and found Imogen sitting on the floor, reading a book.

"Iduna? Oh my gosh, are you bleeding?!" Imogen stood up, dropping the book. She rushed to her side, stunned. She examined her sister's hand. "Does it hurt, Iduna? Oh dear, I'll have to get Ingrid—"

She froze, seeing pieces of glass outside the castle in the yard. She looked back at Iduna, who was smiling devilishly. Imogen dropped Iduna's hand, covering her mouth, tears streaking her cheeks. "Oh my god, what d-did you do? No, no, Iduna—"

"She threatened to banish me from Arendelle, it was only fair."

"You mu-murdered her."

"Murder isn't the best word, Imogen."

"This can't be real," Imogen cried out, backing away. She bumped into a glass vase, making a deafening SHATTER. Had Ingrid shattered the same way as this? "Iduna, you're better than this. Please don't kill me."

"You're the middle child, the new heir," Iduna hissed. "I want to be the heir—Queen of Arendelle has a ring to it, doesn't it? I need to be the Queen of Arendelle, it's only fair."

Imogen wanted to scream for help, but the castle guards and staff were given the day off due to Arendelle's funeral customs. It would be a fruitless effort. Imogen gazed into Iduna's eyes, tears dripping down. "What went wrong, Iduna?"

"I truly liked you, dear sister. I much prefer you rather than Ingrid," Iduna said, plucking the bloody glass shards out of her plan. Blood dripped onto her blue skirt. She developed a high sense of pain tolerance, barely flinching. The name Ingrid tasted like poison on Iduna's tongue. "The world isn't fair, I wanted to be the heir. So I'll take the title, I don't owe Arendelle any favours. After the kingdom has treated me like an outcast, I want to rule with power."

Imogen was quickly swallowed by the growing ice before she could even scream. Iduna stepped closer to her sister. The frozen body was reflective so Iduna saw what she looked like.

An ugly, evil monster was what she saw in the ice-like mirror.

Too bad that mirrors could be broken.

Imogen's frozen corpse extended a hand, a shocked expression on her face. Ingrid lightly touched Imogen's fingers, the body crumbling to the floor. Icy shards of glass were all that remained.

Iduna wrinkled her nose in disgust. Such a mess that would have to be cleaned up. She waved a hand in the air, huffing. Suddenly, a girl peeked her head in the door. "Hello, I-I'm the new maid, Cinderella. I want to start early—"

"Clean this ugly mess up," Iduna ordered, looking the girl up and down. She was dirty with her blond hair in a loose bun. The girl bent down to clean the glass, and Iduna noticed how the girl was barefoot. She suddenly got amused. "Have you ever considered glass slippers, darling?"

"Pardon me?"

"Useless girl," Iduna said, rolling her eyes. She knew soon enough that Arendelle would discover the murders of Ingrid and Imogen. She would have to erase the memory completely but with forces bigger than her icy magic.

Trolls were the answer.

~*~*~*~

Iduna trekked up the Trolling Mountain. Boulders and rocks covered the area. "Elder Troll," she yelled, huffing a puff of cold air. "Elder Troll!"

An old troll came around, rolling back his neck. "Hello, Princess Iduna."

"Queen Iduna of Arendelle," she corrected, flexing her long fingers. She lifted her chin, lips parted. Trolls were powerful entities, good or evil. She never cared for the good or evil, only the in-between. "You don't need context, do you?"

"No," the Elder Troll replied. "But I'm awfully curious, that is partly my price."

Iduna sneered, sighing. "I killed my two sisters to become the Queen of Arendelle. Cruel, but most people wouldn't put it past me. The whole kingdom thinks I'm a witch, an ugly and evil witch."

The troll arched an eyebrow. "And?"

"They're absolutely correct," Iduna smiled, cocking her head. "I need you to erase the whole kingdom's memories of my papa, Ingrid, Imogen. You can install false memories according to my memory."

"Yes, but it's a tricky matter," the Elder Troll licked his lips. "But for you, I'll do it for you, Queen Iduna."

"The kingdom should think Papa and Mama died early of an illness," she said, pacing around the hill. "I was an only child, however, I am a clever and resilient child who shouldn't be questioned but praised as a queen. Is that enough to fabricate a false story?"

"Plenty of facts to pass along."

"What's your price?" Iduna asked. "Name it."

The Elder Troll stroked his bushy beard. "Our population is shortly declining, it's unfortunate. Our women are no longer young enough to conceive and I'm concerned that this will be the end of the troll nation. I want a child, a human child, preferably."

"How will a human child solve this problem?" Iduna snorted as the Elder Troll glared. "Oh, pardon me, I'm just awfully curious."

"I intend for our new child to marry into the Royal Family," he replied, crossing his mossy chest. "Will that be a problem?"

"Of course not, I'll find the perfect child in no time," she said, smiling. "Is that all?"

"Yes," the Elder Troll nodded. "Arendelle will never know of the Frozen Glass Sisters."

Frozen Glass Sisters. Iduna liked the title.

"One last question before you go," the troll said, clearing his throat. "Do you think any of this is fair?"

"Yes," Iduna replied, "it has to be."

No one knew who Ingrid or Imogen was. Their names faded into the existence of nothing. Eventually, Iduna used it as a bedtime story for her children, Elsa and Anna. They'd always giggle, telling their mother how fake the story was.

"Oh yes," she'd say. "I suppose it's all just fictional."

After all of that, she would go to the library and pluck out the birth records of young boys. She had not forgotten her deal with the Elder troll. She found out, seeing an interesting boy. Kristoff Larsen was a young boy who would be fine for the trolls. She planned a way to divert him from his group of ice-pickers.

Queen Iduna was getting exhausted, so she'd walk down the hall, humming. She met Cinderella, who was dusting a vase. "Oh hello, Queen Iduna. I was just cleaning this lovely glass vase. It seems to be made of shattered glass pieces."

Iduna breathed in, smiling. She could hear the faint screams and gasps of her sisters in the vase. It was a piece of breathtaking art reformed. "Yes, I quite agree. Well, good night, Cinderella."

And that was the story of the Frozen Glass Sisters.

The End.