Sister is jealous of me living at home with mum

I think my sister is overreacting she is totally inflating her situation out of proportions blaming other's for they way she thinks. She lives in her own flat she was working but then she stopped because she was mentally ill. She has a neighbor that cackles and laughs sounds like a psychotic dude he sniffs turpentine does god knows what and he woke my sister up at 5am. Its probably been going on for a while and I am not minimizing it but she's been complaining about it for a day. Then we woke up again a new day and she's still going on about it she blamed me for not being able to be at mums house because i am crazy etc. Then she is getting angrier because apparently I am the user daughter thats retarded that she can't stay with mum. The way I see it is differently I think she is being spoilt she has no idea how good she has it. She has her own house no one is bothering her apart for turpentine guy she has her own space her own assistance from centrelink. She thinks I get all of the perks from mum saying mum takes all her effort on me its lies absolute lies and I am tired of her wining because what she is saying lies. Trying to say mum has more patience for me mum goes back and forth with Daniela to appointments takes her out when turpentine guy irritates her and yet it is never enough. She is overly pessimistic and totally distorting the situation and when I try to point out all she has good I get attacked as the bratty daughter that takes mums love. It's an absolute lie mum has patience and she is so strong for what she puts up with. She has me who is add and not really functioning at all and my sister Daniela that is bipolar. To say she is giving all her time to me just makes her seem jealous. To be honest I annoyed that she is saying it as if it is my fault she is in this entire decision. When in reality these were all her choices she decided to leave and now she realizes she likes the comfort of home she wants the easy way out. In reality there is no way out there are only choices and she is choosing to see only the dark and negative and absolutely minimizing the positive.