I don't know what to do (please help)?

He will never except her.I have been in a similar situation.If you really love her marry her and don't care what the old man thinks.It's your life.But please do not subject her to this man.Do not make her have to deal with his prejudices.You will most likely have to leave family behind to do this.It's what my husband and I did when my family didn't except him.