There's a Look that very clearly reads 'you're not helping', even as Sophia straightens further, looking less relaxed and more like a statue as any hint of her earlier good humour slowly vanishes with the continued line of conversation. It was difficult enough being unable to use a warp band to better communicate with her pokémon allies and provide reassurance after the events of the past few days. She didn't need someone to disagree with her on top of that - and it wasn't like Ymir would thank him for siding with him regardless.

"I wasn't aware an amiable conversation with a stranger automatically made us friends." She's not cold, exactly, but it's clear that someone's point was received very very clearly - and whatever annoyance she feels is being carefully swept behind a mask of polite conversation. (Annoyance with him, for deciding to muddle matters? Or with herself, for having been long enough in a situation where such trust was automatically given thanks to the culture that was Union? ..Hard to say.) Sliding off the wall, there's a half-hearted swipe at her pants to wipe away dust, and the bulbasaur beside her snorts awake, made aware of her movement.

"As it was, I wouldn't trouble anyone to make such a promise. It's not my place - and even if it were, wouldn't someone making such a promise upfront simply make them more suspect?"