Yuya's trying, but what he's actually saying is just making her more confused and anxious.

"W-we can't just wait around until there's a problem!" Rita cries, her expression betraying more fear than it normally would. She wrings her hands, trying to think of what to do about this. To start with, she can't quite understand what Yuya's talking about. "What were you even... what about the Summer Maiden?"