It's not your fault if your parents have problems. Seriously. Don't blame yourself. They need to deal with their issues directly and not use you as a go-between. I was in the same position you're in and it's okay to feel scared, but know that if your parents split it's not because of you, but because of themselves. Your mother needs to deal with her anger over not getting enough money from your father in a constructive manner instead of giving your father the cold shoulder treatment. They are not modeling proper conflict resolution or problem-solving in a marriage. You may need to sit both of them down and explain that this is hurting you, and why.