If the party had been even 6:30, I might have enquired, "Should I feed her before she goes?"
We had a youth-group-type instruction thing organized for the kids of several churches. It started at 6. I sent my kid to the first one, and she came home shaking, she was so hungry--there hadn't been *anything* to eat, not even snacks!
And considering that the kids would have had to leave home at 5:30 at the -latest- (sometimes more like 5:10), I hadn't expected to make her eat supper. Heck, it was a Sunday night, and most churches in our area have service at 11, so it's over about 12:15, which means most people would eat lunch at 1pm, so sort of late. An early supper is not that common.
When it was our church's turn to host, by gum we had sandwiches. And one of the moms from the other church made a point of spreading around that we expected there to be some sort of food.