Hey, I'm so sorry about everything. Take a leave of absence from school. you have plenty of time to finish up. There's no way you can do school and be with your dad. don't be tempted to do coke, my ex was an addict and it destroyed his life, got caught drinking too...you dont want the law involved on top of all this. Can you go to a health center and see if they offer mental health services so you can talk to a therapist? I just don't know how you can go through this alone without help. seek help, its there.