She gives Ellie a sec, feels no difference, and gets back to what she'd been doing before. This isn't insurmountable, it's just painful. And she can fix that later, probably. (In the meantime, ow.)

With a hard yank, both hands pulling, her cane comes free--but she keeps going after that point and ends up falling down ass-first, the plant's thorns digging hard into her skin. (Not into more plants, thankfully. Just sitting down hard, her bag bumping against the dirt.) A sharp little breath in, like she's trying not to yell, and she sets the cane down in favor of digging through her bag. There's a kitchen knife in there, one she wrapped in a towel so she wouldn't end up stabbing herself.

Ellie's not going to like what's about to happen, and Ruth couldn't give less of a damn if she tried. Knife in hand, she reaches down to start sawing her way free, focused in on everything she can sense about the vine. Sure, it means a bloody nose, but at least she'll be out of this mess.