Oh...that's a mischievous witch, alright. [What a silly witch. What does she need those things for?] But you've outsmarted her. You're really smart. Anya likes butterflies, but if she will steal Anya's things, Anya will make her own spiderthreads.

[There's no indication she doesn't believe in every word she says.]

Those people sound rude. Magic is real, Anya thinks. Especially if you believe in it. Anya knows that to be true!