[...]

Then rest. We're at least a day out-- give or take, depending on the weather. So long as I have my familiar with me [As if on cue, the little bat appears in a poof overhead, floating aimlessly through the cold wind without even flapping its wings.] we should run into no problems as we pass through.

[It's a demon known for granting safe passage through storms, after all. And besides that, this is Mephisto -- he won't even need to stop and rest, unless it starts getting too cold for Mipha without shelter.]