[She's not this generous all the time, but, well-- Hakuno's taught her a few things. About charity without expecting anything back, generosity for no reason other than generosity itself. It's like a strange fairytale dream, and she knows she won't ever get any returns for such things, yet she does it anyway.

So, when Setsuna pushes it back and words his reasoning a lot better than Lord Light, Tamamo blinks.

And then she almost laughs, but decides to choke it back.]

Hmhmhm~! Very well, then. Of course, I won't spend a generous gift frivolously. [She takes her red envelope back, deciding to honor what Setsuna implies-- or at least, try to honor it.] My, I've grown so unused to polite boys these days. I can already tell you'll be a fine Hero!

[In actuality, his roundabout way of trying to convince Tamamo to do something by using her own reasoning against her really reminds her of Hakuno.]