How do you make your girlfriends mother understand you???

I'm going out with this girl I love very much and her mother just finds anything and everthing to try to break us apart first she used my smoking as an excuse then she used my drinking, then she used because she thought I was in a gang. Now I can't see her and I just want her mother to understand that I do make mistakes and I've made mistakes in the past that I'm not proud of but I'd give everything up to keep my girlfriend in my life. I have never hurt my girlfriend and I never will and if she thinks theres something that might hurt us I'd stop in a heartbeat. I just want to know how to make her understand that I love her daughter and that she justs needs to stop judging everything I do.How do you make your girlfriends mother understand you???
First of all, have you tried telling her all this. She probably won't believe you, but it's always worth a try. She might recognize, and appreciate your honesty. If your girlfriend feels the same way, I'm sure she's trying to help you on her side as well. Eventually, if you both feel the same way, and your girlfriends mother is still trying to sabotage your realtionship, it might get to the point that she won't stand for it. I've seen it happen that a woman felt so strongly, she told her mother that if she couldn't accept him, she didn't want anything to do with her. In this case, it sobered her up and she understood. For now, try your best to communicate how you feel, and keep in touch with your girlfriend. Support her if it comes to that, but be careful that you don't get so caught up in her mother that your friendship breaks apart. Best of luck to the both of you and I hope this helps.