Madoka is indeed very pink. Not as pink as Persephone, sure, but just about as pink someone can get before you stop being a regular human being! Which makes it pretty easy to spot her in the crowd of the party too, because there's a girl around - definitely taller than Alice, but still shorter than most of the other people around - talking to someone before saying bye to them.

It's then that she turns her own head from across the carriage, her gaze happening to meet Maru's. She doesn't quite seem to notice Alice yet (the problem when both girls aren't tall enough to see over people..) but she gives the boy a smile and a slight wave anyway from where she's standing, even without realising his intentions.