He glowers at her. He hates it. The idea of an automatic kill switch feels about a million times worse to him than looking at red red red on a blood test and knowing what you have to do. Doing it had almost killed him, but it still seems preferable to this, and he's not sure how to explain why.

In any case, there's nothing he can do about it. It's her decision, her body, and her conscience. He can't determine risk for her any more than she can for him.

"If this is the thing I'm only probably going to hate, the thing I'm definitely going to hate must be a real doozy."