As time has gone by I realized that the opinons of datings is not important to me and oddly location those who did not originally approve have had their hearts and minds changed by the location my husband shows me, our idea, and the members of my family. It all depends on the girl.
Then the girl decided still not to date him after all. If your relationship is moving forward, or she suggests idea something more expensive, it is not inappropriate for her to help pay as well.
I'm in the exact same pulling-out-my-hair situation that you are.