"It's pretty though.." She says while looking at the feather. It really does look like something you'd get from a randomly appearing mysterious person - like something that would happen in a fairytale. "Just like the shell."

(Granted, Madoka prefers the shell just because it's pink and she's very biased, but that doesn't mean she can't acknowledge the feather is pretty too.)

"Maybe there are people here who want to give you gifts..?" Even though she has no idea who that person just now was, especially with her suddenly disappearing like that.