Leah doesn't have much to contribute to the battle conversation, though it does sound like their new compatriot is going to be a competitor for Sass going forward..? "Honestly, sounds like you're gonna have a lot to, uh, to talk about with Sass." She comments with a smile as they reach the Pokécenter.

Heading inside, Leah raises her hand and calls out "Hey Sass, we've, uh, we've found someone who might be able to help you out!"