It's a construction site! There's got to be useful stuff around!

She notices a stack of plywood nearby. She grabs a plank and carries it over to the pit, and she slides its edge into the concrete where it dips and bubbles, hoping it's somewhere close to where Eric can feel it and grab onto it.

Then she picks up a shovel, and with vampire speed starts shoveling the concrete out before it settles and starts to harden. She can't make much of a dent in it all by herself, but maybe she can remove enough of it so that she won't have to dive in so deep...

Goddammit, she's not dressed for this!