Onca responded in kind to Asta's light reassuring squeeze. He already ran fairly warm, but the duress of his injury had spiked his temperature a little. He loosened his grip just a little so his hand wouldn't get unpleasantly sweaty. The anesthetic had started to kick in so the pain was becoming more and more bearable, until he was able to relax a little more loosely and stay still without being stiff.
"I'll know once I get a better look, but I'm afraid this won't be magically better by next morning. I'm unfortunately not that kind of healer." Nerys had begun lifting out the first shard of the wood, tapered and long so that it allowed inner space for the surrounding pieces to be lifted from the flesh without scraping outwards. The wood floated by her palm before being placed onto a tray, and she set to gingerly removing the next pieces.
After extracting all of the wood, she peered into the hole to confirm it was cleared of all splinters, careful to keep her hand that was willing the blood from spilling steady. "Mm, thought it'd be the case." Nerys had seen how Onca hadn't been able to put any weight on his leg at all. "If there was only muscle damage, it'd be a faster recovery, but your tendon and fibula need repair too." She closed her hand into a fist above his leg, almost magnetically drawing in the last traces of debris from his leg, and pulled them out.
Nerys fished out some powders and oil from her pouches, expertly portioning and mixing them with her free hand into a little bowl. "Had it been you, dear, I would say three to four weeks. Realistically for him, I would give six; I know a patient who won't listen to bedrest orders when I see one, and it'll delay the speed." Onca did not protest to this, and watched silently as she began spreading the mixture inside his open flesh. She hovered her hand over it until it glowed and seemingly disappeared, melding into the tissue. "This will restart the growth and keep it from festering. Absolutely no strenuous activity or weight onto this leg for the next month, you hear?" She unraveled a roll of bandaging with one hand and held out the end to Asta to indicate for her to help tear it.
"Once we finish the dressing, I'm releasing your blood flow. I can't prevent all blood loss if you're to heal, so there'll be a decent spillage before it clots and you might be lightheaded for a while." She didn't even wait for Onca to answer (as she she didn't really expect any from him at this point) and finally looked back at Asta while holding out the bandaging. "You'll likely have to keep an eye on him for the rest of the day until he replenishes the blood over time."