When dealing with a girl with controlling parents, you can do a few things. One of them, is get the parents to absolutely love you. Talk to them, chit chat, they like that kind of stuff. I had a girl, in which the Mom was the biggest Christian, but because she liked me so much, she'd let her daughter sleep over my house, let me sleep over, etc. The only downside about that is if you ever get on the parents bad side, (in my case, I got into an argument with my girl in which I called her a "*****" and she went and told her Mom about it) then the parents will hate you. So if you get them to like you, you may want to keep it that way, because they'll make your relationship a living hell later.