[Reimu narrows her eyes at the witch as she bends down to get her shovel. She's still suspicious, but she does relax just a tiny bit.

That might have been wise, as the miko just barely manages to duck when the snowball is thrown at her.]

Hey!

[There's only one way to respond to that, so without another thought Reimu is already scooping up and packing a snowball of her own, before then throwing it back at Marisa.]