Sorry to hear about this,I'm going to have to give you my same advice as I give many, see if you can get into some type of counselling, so many families deal with this, my grandmother had this situation with her first husband, she was quite and still is (she's 93) a strong person, she left him because of his drinking and abusing her and my mom when she was a little girl, back in the 1920's women just didn't do such bold things, but she went on her own, worked in sweatshops to support her and my mom, later she met the grandfather I always knew as grandpa, things turned out good for her this time she had a great relationship with him, unfortunately he passed away about 9 years ago.
Today family counselling can help you work through this, my mom didn't have this opportunity back in those days and grew up to have a "icy heart" towards men, I think over the years it grew colder towards my dad, sad for him he was never a drinker but could be difficult, what was even sadder she wasn't even sad when he died 11/26/02.
You can check with Family Services, your school, even try a local hospital to see if they have a Behavioural Health dept. that refer you to someone. Though it is hard try not to let this ruin your years to come, you may miss out on some beautiful parts of life . . .it's yours for the taking.
Take care now,
"darkeyes"

In giving advice seek to help, not please your friend
SOLON