[That is a very tempting offer in the eyes of someone who is around twelve years old and currently taking a break from running─ or, well, more accurately flying─ into the walls. Even so, Platinum (Luna, to be precise) gives the stranger a suspicious look. In fact, she seems to be taking her time replying, seizing her up first.]

Staaaaaaareee...

[Yes, for some reason, she feels the need to voice the fact she's staring at her. Don't ask. It's one of the less weird things about this girl anyway.

As evidenced when Platinum (Sena this time) speaks up, seemingly talking to herself:]

Luna, it's not polite to stare like that... This nice lady only asked─

[Suddenly, the girl cuts herself off (or so it looks like, anyway), pointing dramatically at Natasha.]

Aha! Luna's got you figured out! You're the villain!!

[... In reality, she just really wants that bubblegum, but there's one thing about the woman in front of her that rubs her the wrong way, so she's choosing to be difficult instead. (No, it has nothing to do with superspies. More like being jealous of someone's, uh, cleavage.)]