Focus on your self first. You can’t help anyone before you help yourself. Settle your mind first. Don’t think doing anything extreme will help your mom or yourself. Your mother can take care of herself, despite of a shitty hand dealt, she is a survivor. Don’t become a worry for her.
Realistically you are useless. You can’t decide for her, can’t force her to decide. Only thing you can control is your future. Study hard and make a career out of it in order to help your mom. Be apathetic to your father. You thicken your skin and endure it.
Big changes won’t happen immediately. Take your time and persevere through this, grow a thicker skin. Help yourself first.