Most Helpful Girl
It's a sweet thing to do, and if she really cares for you as you deserve, she will see it as that. If she really is just past it, which I feel for you if she is because I know it can be hard, she will be upset by it. I think you can give her time, but don't let her bring you down. You deserve to have joy and peace and someone to love you as much as you love them and show it in actions!
Most Helpful Guy
If you're friends and close with her mom, you can talk to her about it. Mention it in passing. Don't be dramatic about it. The girl isn't going to like you going to her mom though