(As requested by dragonrider3000) :) 1/2/16
A/N from future: I have developed her story much further than this. Of course this was only a summary, but I have changed quite a lot...I added a lot more to her 'traumatic past' ( old comment) and developed her a lot more. You will see in my new works.

Star is a girl who is only a few centimetres shorter than Harry, has straight hair down to her knees, with  a mixture of mostly gold(en blonde),as well as a slightly ginger tone to some parts and 2 long blonde streaks aswell.
She is a character I have added into my harry potter book and probably will be in any future ones aswell. I added her to play around the story as well as just a figure of my imagination :).

Her past and life (summary)-
She only remembers from when she was 4 moon old being alone in the wild . From there she wandered around the wild learning about her destiny . She keeps quiet about this part of her life because it is difficult to explain and she doesn't see why she needs to. All there is to say is that she survived in the wild relying on her own instinct from when she was 4 moons old. She speaks differently to others with a strange voice (almost like like an accent). She keeps track of time by saying 'moments or sun-high or moons' and length by length of animals.

Though when her destiny gets tied up with Harry Potter her world changes. She learns what it is like to be human. Since, when she reached 8 years of age she goes to Privet Drive and ends up living there for a few years. However, when they run away from their house, which is just before she turns 11, they leave her behind and don't bother looking for her. She is found by Hagrid when she turns eleven to take her to Hogwarts but is also there when Hagrid meets Harry. She goes through the years with the turmoil that happens with the trio, as well as her own problems. She becomes good friends with Ron, and is best friends with Hermione. 

She takes the enchanted diary from Ginny to save her in case it is evil, since she sees Lucious slip it into the cauldron. (But this doesn't change anything really). In her third year she is struck by a dark magic curse by Draco and becomes part-wolf for the rest of her life. This means that whenever there is a full moon out and the days between her eyes become bright green from their usual blue-green, she can't sleep at all, she gets fangs and she gets the sense of smell as well as hearing of that of a wolf. Also when she sees Lupin transform into a wolf she becomes one too because it triggers something inside her. However she still remembers who she is and everyone else, causing her to put herself between Lupin and Harry when he is about to get attacked (before the dementors' scene). In her fourth year her name is put on the same paper as Harry's because Voldemort wants her captured to become a Death Eater. Moreover when she is transported through the cup portkey she transforms into a cat, To torture Harry she is put under the cruciatus curse for most of the time. During her fifth year she is taken prisoner as Voldemort leaves the Ministry building (at the end of the year, at the end of the battle). Voldemort intends to torture her into revealing everything about Harry because he wants to try and get into her mind to find deep secrets that he has been trying to get out of her all year. Star has a strong mind and easily defends her thoughts if anyone tries to break in. He does this by taking her to a book dimension to drive her insane.

Here she realises that Voldemort is one of her demons. Everyone has their own demon, it is a part of them that is something they fear, hate and are the opposite of. Sometimes they can take over you (e.g if someone got depressed). Star's demon is falling in love. She could fall in love but she knows that her destiny is not like that. She knows that if she were to fall in love she would have to leave them to follow her destiny, which she wouldn't want to do to someone. That is why Voldemort becomes her demon, to weaken her and make her dark. He has found out that not her mind but her heart is a weak point. To worsen this when she escapes his clutches he makes her fall in love. Fall in love with no other than Draco Malfoy. (There will be more on this on the StarxDraco story :) ).

During the whole sixth year she gets tormented with nightmares every night or she is in the room of requirement, mending the Vanishing Cabinet ever since she had a dream about it. Sometimes she goes more than a day without sleep and she becomes more and more distant as the year goes on. At one point she goes 10 days without sleep to avoid the nightmares ( this causes her to fall asleep in Potions and she has to discreetly ask what potion they are doing). In the last moon of the school year she wakes up screaming in fear. At the start of the year she starts sleeping in the hospital wing to avoid disturbing others with her thrashing, convulsions and cried out when she sleeps. This is the year she is broken.

Then during the seventh year she used the polyjuice potion to turn into a wolf to escape to the burrow. She found out that she is better at turning into animals rather than humans (even though you aren't supposed to) from 2nd year when she turns into a cat to follow Harry and Ron into the Slytherin common room to see if Draco is the heir of Slytherin (and her potion effects last twice as long as they would normally). She goes on all the adventures and is transformed into a wolf to hunt for food for the others when she pulls Harry out of the lake when trying to reach the sword of Gryffindor. However Ron is still there to grab the sword and destroy the horcrux while Star runs off to hunt ( and keep away from the horcrux since it makes her go back to how she was on sixth year- battling deep inside herself to keep control of the demon taking over her). When they end up at Malfoy Manor she isn't captured, since she is a wolf ( when the others are running from the Snatchers she ran too fast and ended up far away from them- so she took a swig of polyjuice potion to follow them without being noticed). She comes back for her friemds but is found when dementors protecting the manor start attacking her and she becomes human again. Whenever she goes back to her human form from being an animal she becomes just like when she is when its a full moon. When the Death Eaters find her they think she is trying to disguise herself, and they eventually find put who she really is when Draco accidently reveals her name. They immediatley know that Voldemort will love to have her as well as Harry Potter. Moreover when the trio escape they leave Star behind, since when the chandelier falls, Fenir Greyback (who is holdong her to stop her escaping) pushes her right underneath it. But as the chandelier falls she is pulled back by a spell to save her. She escapes with minimal damage from this but she is separated from her friends, meaning she is left behind at Malfoy Manor. While the trio are staying at Bill and Fleurs, she isn't tortured, she doesn't need to be. She becomes broken again. On the day the trio break into Gringotts Voldemort tries to make her a Death Eater by sharing the darkness from someone's Dark Mark. She manages to not become a Death Eater but her hair turns black apart from the blond streaks and her eyes look clouded (her demon has taken over). She is there when the others are on the island after riding the dragon and stays with them. She watches Snape's memories because she saw Voldemort's the previous year, since Dumbledore thought her strange mind might decipher things better. She also goes with Harry to see him die but the curse is so powerful it hits her as well. When she 'dies' she becomes stronger and becomes the old Star again. She gives her life up to Harry in the end because she sees that as Voldemort is getting weaker he is going to die flicking back a curse that would kill Harry as well as others around.

Summary
Star is a complete book worm,very knowledgeable (like Hermione), She will fight for what's right and she is completely against animal cruelty and testing and during the summer holidays she protests . She is a feminist aswell and is up for a challenge to prove herself ( when she she is 13/14 she starts doing coding.) She is a geek as well as a nerd but she loves it! Her path may become unclear but she follows the light of Starclan. One of her favourite band is Imagine Dragons and she is an ambivert.