(Yes, there may well be issues I don't know about. The girl may have turned down the help. The boy might not actually be mobile. Etc. I didn't ask; I was fueling my own vehicle and otherwise staying to myself.)
Actually, even more remarkable to me than the girl being able to bounce around dealing with fueling her car was that she was able to drive at all. The couple of times I was in heels that high, driving was a real challenge, and in fact at one point I just gave up and took off the right shoe rather than risk getting the heels tangled up in the pedals.