He's a little alarmed that they have the ability to manipulate Alex like that. It was bad enough that he did; Dennett at least had a conscience. Somewhere.

"I'll have to take a closer look. Hold on." He has, in his limited pilfering skills, managed to snag a bottle of water. "This might sting--it's not salinated." Because, yes, a sting will surely bother her, with the damage he's seeing. Still, he owes her extra consideration, as he moves to pour the water gently over the damaged socket.