[Edelgard gets this really cute look on her face when she's concentrating so intensely, and it's that thought that distracts Lorenz as she summons the flame in hand. His own is extinguished the moment she starts so he can better focus on her attempt - though his attention strays to her face within mere moments, which proves to be absolutely detrimental.

Not that he would have been able to save her hand even if he'd been more focused, but he could have help her put out the flame quicker, at least.]

I— Yes, of course; that's certainly no problem, but Edelgard...

[It's taken a ridiculous amount of control to keep himself from reaching out for her, but he does take a step closer now, holding out a hand as an offering.]

Please, permit me to heal that. I'm nowhere near as skilled as Professor Manuela, or any of the other healers, but I imagine that stings quite a bit. Let me help.

[His words are careful and composed, but his expression gives away just how worried he is. Sure, with such a small flame it's unlikely that she's been seriously injured, but a burn hurts no matter how small it is. It makes sense to heal it as quickly as possible, and he doubts she wants to go deal with Professor Manuela right now, or try to find Linhardt's newest napping spot.]