You can find a lot of strange things in the Wyld. Not that Celes, as a rule, spends very much time in those volatile liminal spaces, but sometimes events... eventuate. A wandering shikari turns out to not be quite so inexperienced as one might hope, and gathers a larger hunting party than is ideal. Hideouts are burned, peasantfolk are warned off, and avenues of escape closed. At least diving into a bordermarch might give her pursuers pause, and Celes is (hopefully) better equipped to deal with what she might meet there than they are.
It's as solid a plan as she's got, and seems to work reasonably well-
-until the world twists and shudders and spits her out from the candy-scented lilac trees to a place that something in the taste of the air tells her is completely different.