She absently manipulates the putty as she listens to him, eyes wider in surprise to realize what just happened. But she's also deeply touched, her expression says, that he'd hand her something that precious - when he could still probably use it instead. What if he does? If something happens?

Then, she guesses, that means she has to be there as well, to make sure it gets used.

"Wayne, I...words feel insufficient."

To grant her any power at all, to grant her this, something that heals and protects instead of harms, as if it somehow was going to end up in her hands by fate. Something to give her and others more shots at surviving.