How long do you wait to break up with someone?

My girlfriend and I have been dating just over one year. She had lived her for 9 months, she moved in after 2 months because her and her parents got into an argument. Recently, about 1 month ago, she moved out giving her reason, ';I'm just not happy here'; and wont come back for any length of time. To see her I have to go to her parents or on a date and if i suggest any time at my house she says, ';I moved out for a reason';. Basically, she has said that she will NEVER move back here and the only way i will ever be able to live with her would be to sell my house, yes - i have bought it. I do not know how much you should give in before one finally has enough. I am 24 and she is 21.How long do you wait to break up with someone?
she seems to be making the rules here. do you love her and want to spend the rest of your life with her? i get the feeling you may be ready to move on!!~!