Mat isn't deflated by Yennefer's tone, but he does sit. Still glaring, still fidgeting with his fingers, still angry and frightened.

"Sometimes it's just a dark shadow form. Or a creature of the dark - trollocs and the like. Looked in the mirror and there was a darkness moving in my face. Under the skin."

All of these are very telltale signs.

But she's said what he wants to hear. That she will fix this, she will make everything alright. If anyone can, it'd be her. What other hope does he have? He's not about to go to the castle mages. Who knows what they'd do? There's the chance they'd decide he's dangerous. Too dangerous.

"The taint is in me. I thought...oh fuck me, I let myself be lulled into false security. I thought if I was drawing from the source of power here, maybe it would be fine. Stupid to think anything would actually work out for me."