You're either going to have to do damage control or move on to the next girl. Was she generally having a good time? If so it may be worth it to do the damage control. Going dutch is alright, but her paying way more isn't.
She may be more receptive if you are bluntly honest about the circumstances. Maybe not the virgin stuff, but maybe that you haven't dated a lot, nervous, ect. Some women are suckers for honesty/weakness. Depends on the broad, but worth a shot.