Tama! Haaai. Pansy would be tolerant of Rin just for the cooking, since she's only a middling cook herself.
She's not on good terms with Draco right now so she'd feel sorry for (and jealous of) Asuna for having to room with Draco.
I think the Padma/Pansy dynamic could be interesting! As a Pureblood and not a Gryffindor, Padma didn't really make a lot of waves with Pansy, which is as close as she'd get to Pansy without being a Slytherin ;)