Reynard simply stops and... stares. It's not what he expected and he's not entirely sure what to do about it. But, after a moment's thought, he waves a hand and the thrashing woman finds herself as an Arctic hare. He beams.

"Perfect! Now you'll be able to deal with the snow and you can use up all that energy!" The beaming turns into a sneaky grin. "And it serves you right for trying to slap a Winter spirit. Enjoy, my dear! Or, heh, my hare."