Aaaand got a quick one out.

Basic intent, Zeroth, is that Esfir is trying to hide somewhere away from aerial view that's close to ten feet of the Tatzelwurm. She's basically using it as a bait for the Harpy; if it takes it, she'll shoot out a Frost Arc to hopefully slow/stun it before she runs in to stab it too. If the wait is too long though (maybe around half an hour), then she'll eventually just return and bring the Tatzelwurm back to camp instead.