*cuddles*
Sweetie you are
not a bad person for self harming
The way your sister is treating you is wrong but it may be that she just doesn't understand it and so gets angry about it.
Could you try explaining things to her
or print some information off and give it to her to read.
Also could you talk or write to her saying that the things she is saying is not helping and making things more difficult.
I am sure she doesn't want to hurt or upset you but she probably doesn't know what to do.
Take care of yourself hun and remember none of this is your fault and you can get through it.
much love
