Most Helpful Girl
There's nothing you can really do. Relationships need physical attraction too, and if you can't feel it, then don't date her.
I mean, you can give it a try. There are cases when people "fall" for a person despite lack of physical attraction and don't mind in the future because...well, when you love someone, how they look doesn't really matter to you anymore.
It's your choice if you want to take that risk and date her, but know that if you do, you're not only risking your heart, but someone else's too. Don't break her heart.