Oh shit, the girl's disappearing, and leaving all her blood behind. This situation is not getting any better. She's not going to get very far like that, and Tabby sure as hell can't get away. Not with... whatever that is tangled around her ankles at the bottom of the bath. They're still going to find her, find out what she did, stake her outside where she can greet the sun.

So, with great effort, she drags herself through the water after the girl, follows the lure of blood--it is getting kind of everywhere--but she can't... really... get out of the bath. Legs are still tangled up.

There isn't really much left to do but... reach for the girl's arm so she can drag her back to where she can reach her, patch her up before it won't matter anymore.