"I'm sorry, I'm not sure I can promise that." Natasha's smile is absolutely a smirk. Hard to feel guilty about it when she's well aware that Evie would rather not be here anyway. Floats and costumes, big public displays? Not that Evie can't handle it, but the two of them are the same in that they'd rather not be in the spotlight.

And the same in that they both enjoy fooling around. "No one's going to miss a costume and a prop or too. Maybe I'll sneak them out. Not my fault if you happen to be in them still."