[Bennett never really understood The Fury and all the jokes Topher had made about it but now she does. Which sends her into another downward spiral of paranoia, thinking that oh God, what if he only wants to be with her because of her arm? That's disturbing on so many levels.]

I'm fairly certain this is a, this is a perfectly good reason, we have a perfectly good reason to...freak out right now. Freaking out is a perfectly reasonable response to being able to hear your thoughts.