They might just undo all of their progress, it's true. But - here at the end of all things, Peter is willing to try anything. Anything at all.

"Please, yeah," he says, scrubbing at his face again. "If we put the mask back, I'll just - have to do this again." And then kill Ben, probably. Anything is worth risking for this. He just wishes he could do it instead of her; he's afraid of exhausting her past her limits. After this, he owes her absolutely anything and everything, regardless of whether it works or not.

He turns back to Ben, then, reaching out a hand again. Voice wavering. "Just hold on. Please, Ben. Until we can try this."