i’m 18 and i have an 18 month old sister who i take care of more than my parents do. i give her baths and i feed her and i do whatever she needs to survive and be happy. she prefers me over my parents and when she’s sick she only wants me and no one else. my parents provide all the necessities she needs and in no way abusive to her. they take care of my other siblings just perfectly. they also leave for hours during the day and get pissed when i don’t clean but it’s hard to do that and take care of a baby. they hardly ever let me go out and when they do they get all mad because they want to go out. i’m starting to get depressed and really struggling because i never signed up for any of this. i need help. what do i do