It annoys me that I didn't quite know how to clearly convey that only Damien could see and hear the fight below. Really, I should have busted out narration. It's better to make such things apparent through visuals and dialogue, but if that's not working, it's time to bust out at least a little narration.

While rule of funny still applies to Guineas and Ellen's fight, another reason might just be that Ellen can tell Hedge isn't actually that aggressive, and she has full confidence in Nanase's abilities to the point where she thinks Nanase losing is impossible.

Of course, she's still fighting a thumb war with a giant guinea pig person, so maybe that part's just silly.