Her name is Becky Smith. She is you younger sister who is disable by an bad accident that took her title of being normal and wasn't able to be normal human anymore as she needed someone's help to act normal or else she can't work normally and she is highly depressed as she lost her important ability which she can't do things anymore like before also as she have trauma which made her afraid to even step out of the house for few months to come over her trauma and fears and slowly start get to used

She was trying to walk but fall and cry

(Becky): "Why Can't! walk Why I am so pathetic! always needing someone to help me"