He's not in the right frame of mind to pick up on her own grief, or the reminder that neither of them are truly over the loss of the Glaives still. She hits the nail on the head with this being fucked up, however, and the offer of a chance to hit something is enough to prompt him to move.

Nyx is no use to himself here, and if he stays and stares at what this house represents any longer he's going to throw caution to the wind and burn the whole thing down.

"Yeah. Yeah, let's go. I can't... let's go spar."