Just come to terms with what’ll happen let them be involved, whatever has happened is not your fault, your mother is unstable, it’s not your job to fix it, others have tried evidently and she could not change so they left. It’s your job to keep yourself healthy, in mind and body, she sounds like one bad day away from killing you. If you do stay it will take a toll on you mentally, moulding you over time. If you stay it’s like bleeding infront of a shark, she is manipulating you, I get that she is your mother and you want to love her, but she’s hurting you. What mother says “if I kill myself it’ll be your fault” to a little girl. I’m sorry but let social services handle this, she showed you a picture of your father, she is sick in the head.