*TW* please help me.

i need somebody’s help. i found a lot of cuts on my sisters body. i want to cry. i don’t know what to do to help her and even my mom has noticed. she said something to her about it but i don’t think it’s going to help. i know i’m going to sound bad for doing this but i went through my sisters bag to see what she has in there because she doesn’t let anybody see what’s in it. i found a huge kitchen knife, it had red on it but it could’ve been fake blood (she does sfx makeup). i’m just so upset and shaken by this and i don’t know what to do. i just feel like crying...somebody please help. any advice would be helpful please.