ANSWER:

You can’t marry her without the consent of her father! 

Try to convince your parents and if they are adamant and won’t budge then you can go ahead and get married to her if you are financially independent and can open up a house for her even without their approval as a man doesn’t require anyone’s permission to get married except the consent of the girl’s father (wali)

QUESTION: My marriage got fixed with a very decent girl who follows Islam precisely. However, now my parents are disrespecting and insulting her family and think that we are superior to them (girl’s family) and now due to this her family does not want her to marry me because of my parents. But we both like each other and want to get married. what should I do in this situation