Penny pursed her lips again, absentmindedly lifting up a hand to push her hair back from her face, simply out of habit. "I know Hagrid wouldn't- I know he'd just make room for it in his hut. And he's very young, he could adapt- he could learn to live without-" She debated telling Charlie all about the things Muggle vets could do. "You know, sometimes Muggles make things for their pets, dogs, cats, rabbits, to help them walk again if they've hurt their legs. Wheels on frames, you know? We might be able to-" we? "I guess it's possible that someone one day would find a way of making him another wing. Or something like a wing. But well, until then-"
She knelt beside Charlie, huddled over the foal, her fingers working slowly down the wing, following Charlie's path, until she found the meeting point of the healthy and the destroyed wing bone. "Can you just hold here, please? I'm going to cut it just above. It shouldn't bleed a lot, I don't think it's had blood going to it for a while." From her bag Penelope pulled out a scalpel and a rather harsh looking saw. It was easier to do these things by hand than with magic, she always found. Sometimes it was easier to be hands on completely.
"You work with dragons, don't you?" Penny asked, glancing at Charlie. He wouldn't be squeamish about wings. Dragon's surely had wing problems all the time. She pressed the scalpel to the thestral's skin, cutting around the bone before she swapped for the little saw. It took no more that three firm strokes to cut through, leaving Penny holding the poor wing, which looked even smaller now that it wasn't attached to it's owner. The remaining stump bled a little, but Penny's bag was prepared for all things, and she applied some of the salve she had offered to Charlie, wrapping a bandage around it to keep the salve on and the wound clean as it worked.