"Nick?" She turned and, seeing him, grinned. "I see you're a bit tied up at the moment." But she didn't exactly have a sharp object on her to cut him loose. ... Unless...

"You might want to cover your head." And a second later, she hopped up on a couple of tree branches to make her way up to the section of the vine between Nick and the tree branch it was wrapped around. This probably wasn't the best idea, but it'd work.

She bit down on the vine, snapping it and likely causing gravity to come back into play as she hung onto the still hanging part of the vine.