"You really should buy some more forks," Luna informed him, as she received her floating plate. "What on earth do you do if one gets bent? Does someone have to wait till the others are finished eating?" And was the plate not as important as the fork? How odd.
She was already sitting, so she settled the plate on her lap, balancing it carefully before beginning to eat. She wasn't going to scarf things down just because Severus Snape was waiting around for the fork.