This does bring up the question of whether the Shifting Mound would intervene and yoink the Witch right as the battle starts or not. We never really reached a solid conclusion of that in the Goku thread. Even if not, this open environment does make the Witch's Root Manipulation virtually null.
That said, if the Witch behaves anything like her previous incarnation, she’s likely to be quite stealthy. Her Chapter 1 counterpart
became completely imperceptible to the Hero while in an enclosed and empty basement. Admittedly, the darkness helped, but still.
The biggest challenge here is that the cabin is perched on a hill, and while there are trees nearby, they’re definitely farther than 6 meters away. She’d need to make an immediate sprint for the forest if she wants to attempt a sneak attack. Which is
honestly in-character lol
Another issue is her being roughly baseline 9-C. Even if she successfully lands a sneak attack, Hunter could likely still push her away. Once that happens, she's kinda done for.