Missing Royalty.. or Albus royally screwed himself

She saw Harry sitting by Draco, and winked.
He smiled at her.
Dinner proceeded as scheduled, and Harry noticed his cousin and her group were not at dinner.
He looked confused.
Minerva noticed his confusion and looked around.
She turned to Albus, "Where are our guests?"
"Still in their rooms, I imagine."
Minerva glared at him, "Are you so set on being rude to every guest we get here at Hogwarts?"
Albus looked at her, "I am not being rude, I sent a house elf to let them know the meal was being
served."
Minerva looked at him, "This was your last chance, Albus."