I am always loyal to you doctor...

(Y/n) was always by Dr. Gaster's side.

You're the only person whom I live for

They obeyed every command without question. What Gaster wanted, Gaster got.

There was nobody who cared to help me, cast aside I was left alone to die. Till that day you came and took me away...doctor I owe you my life

(Y/n) was found beaten and abandoned near his lab in Hotland.

Under your care everything was plentiful. Soon I found my self well fed and beautiful

He graciously took her in and nursed her back to health.

Though I feared one day it would come to an end, thank you doctor for sparing me once again

(Y/n) was concerned for the doctor's life, for he had made many enemies in the underground. Many monsters had lost loved ones to his experiments, even the two beings he made from his own magic despised him.

Perhaps I was disliked by your 'family', but that really was no concern to me

Sans and Papyrus, the 'sons' that Gaster had created, loathed the humans very existence.

Just tell me anything that I need to do, anything to please you

As stated before, there is nothing she wouldn't do for the derailed doctor whom she had come to love.

I am always loyal to you doctor, you're the only person whom I live for

It came to the day she always feared. The monster joined to rebel against Gaster.

At that point in time, I had to decide

The skelebros begged (y/n) to run away with them, to avoid a tragic end.

But believe my words, I still love you~ doctor

(Y/n) looked back at Gaster sadly, but turned toward the bros as they heard the doctor's pained screech as his body turned to dust.