[Korra's pretty good at figuring out what's a serious wound and what isn't after so many years fighting in Kiseki and back home and she's making a conscious effort to not deplete her energy on wounds that aren't critical. So once she's close enough to Ciel to see the wound isn't actually serious, she stops trying to heal it almost immediately. It seemed more serious from far away but she's not foolish, although she does frown in concern. He should, at least, be getting a salve or a bandage to stop the bleeding, shallow cut or otherwise.]
You should wash that out, make sure it doesn't get infected. [Waterbending over some clean water] Need me to boil it for you?