Yes I should be able be able to manage a splint at least. Arendin says before quickly addressing Aravashnial and, in as calm and soothing voice as he can maintain, saying Sometimes you can't feel your own burns, that's not good but it's normal, and I have fixed most of the damage. Your eyes will need further healing but you're otherwise fine. before making his way towards Anevia. Only as an afterthought does he reply later with Oh, and my name's Arendin, glad to have you along Mr. Lightbringer.
He is visibly relieved at Isaac taking charge as he starts working on Anevia, pointedly ignoring the argument occurring over his head as he continues to work off of the almost rote response of his role as healer so he doesn't have to think about the full ramifications of the situation. As he does so he contemplates if his magical healing could fully fix her leg, and if it would be worth the spell.
Spoiler: roll
Show
Heal check: (1d20+10)[18]
knowledge religion to determine if CLW can fix her leg: (1d20+1)[12]