[quote=Yog Sothoth]
well it looks like Samantha knows since she heard Acacia make fun of Willow with the Slytherins
[/quote]

And I say she couldn't have logically heard anything over what, a hundred people talking very loudly, and Acacia wasn't that loud. She only talked to not even half of the students, just a little group. Sure they shot her dirty looks, but that would be normal considering her reputation. If confronted, Acacia even has a perfectly solid reason for why they did that after she sat down.

They saw her with Willow, and decided to poke fun at her and them both, then Acacia defended Willow. Samantha, could not have logically heard anything.

Meh. Whatever though. This isn't worth the effort.