Gwenog's amusement at her puncturing of their over-inflated incorrect opinion of the world brought the snarl out of Theo a little, had him smile back about that a little. It faded off his face quickly though, firstly into pain and then melting into nothing, a blank doll of a non-expression. The soft music of Gwenog's voice in Welsh brought him back around to some semblance of normality, if normality had been beaten up by a group of guys in a back alley somewhere.
He appreciated her distance from him without really realising that he was comforted by it, would only have noticed if she had reached out to touch him. "It' all because of you." he said, credit and gratitude where it was due. It had been a painful process, sure, but much less pain and bother than if he'd had to heal them crooked and then rebreak and heal them one at a time. He flexed his fingers, feeling the ache in them but not the white hot agony of before.
For all his gratitude and comfort with Gwenog as she'd helped heal him he still flinched back when she stood and lifted her wand to clean her clothes, his heart skipping a beat despite himself. "You're not a bitch." he said fiercely, immediately angry at anyone who would have said such a thing about his saving angel, the sudden rush of anger making him a little lightheaded. "I'll definitely owe you, and not just one favour. I really appreciate you doing this for me." he promised sincerely.
He shrank into himself further as she offered him further help though, his mind trying desperately to skip over what had really happened to him, why he was slumped down and why his clothes were in such disarray. He hadn't made a sound as Gwenog had reset his broken fingers but the tendrils of memory that creeped back into his mind the way those fingers had pushed into him had him whimpering without knowing it, the noises just coming out of him unbidden. "No, I, I, it, it's okay." he stammered, switching back to English as his mind couldn't process Welsh and keep a lid on his panic at the same time. "I think I'll just, I'll just wait here a little, little, a little while and, then, yeah-" he was starting to fall apart as much as he was growling at himself in his head to keep it together, at least until he could make it home.