What to do if my girlfriends parents are too strict?

So me and my gf are both 23. She is my first gf (I'm a very shy person) and we've been together for a little more than a year. Her parents are very strict with her and never let her go anywhere and if they do she usually has to be home by 10pm or 11pm. They have already said they're ok with her having a bf and she says they like me, but they don't really talk to me much when I'm around which I guess is because their English isn't very good. We never argue about anything except about the way her parents treat her. They let her brothers do whatever they want, but if I want to take her to see a movie (which is across the street from her house) they'll say no. We see each other twice a week, but only because she tells them she's at school or work. Is there anything I can do for them to give her more freedom and do you guys think it will last?