Well face it, the biggest influence in childrens' lives are their parents. So of course she's going to listen to her mom. Parents often have good advice to offer, but we being as teenagers don't often see that because we're all about independence and doing "what i wanna do". We're all a victim of this.

Perhaps she does have a lot of feelings for you, so she's stuck between her family and you. It's gotta be a tough decision. I've never really had this problem, because my parents were always cool with my boyfriends while we were dating. (It's after we broke up that they didn't like them anymore. )

Her mom probably wants her to focus on school and whatever else she wants to do. Lots of times boys and relationships can be a distraction. Don't take it too personally, let her get things straightened out with her mom. After all, you want her parents to like you.

Good luck.