He nods, and releases her arm in order to lift the thread, tie it, and then snip it shorter.

"It won't heal correctly," he warns, gripping her arm again. "Are you certain----"

The hospital is a bad idea. He knows this. If it were him, he wouldn't even think about going, but she's the doctor. She knows how to stitch him up so that the scars are small and easily tattooed over.