He committed zina with a woman and wants to marry her, but her father refuses

I have more of a problem, than a question to ask. I have had a Muslim girlfriend for 2 years, but recently split up. I know that she feels the same way as me, and that we want to marry. The problem is that her parents have warned her not to contact me. If I was to tell them that I took their daughters virginity, will this give me the right to her hand in marriage. I know that it was a sin to do this, but I wasa doing it before I converted to Islam. Now she says that she must obey her family, but i'm so desperate to be with her (for the right reasons) and take her as my wife. In the country where she is from, there are 'religous police' if we had intercourse in her country, then they'd make us marry, but we don it in the UK, does this matter? Please help me, i'm in total dispear at this situation. I will do anything to allow her to become my wife.