Bad news for it, then: with everything having been locked up tight for the winter, there's really only one true way out the barn. And considering Byleth is right there charging for them...

Well. One could opt to be clever and try to skirt around both of them by going to the side.

But then, considering how Angeal throws his shovel to knock some boxes off from the loft to topple right in front of its path, that's harder said than done.