Geez, barking? How rude. Willow of course can't hear that, though, and she winces in sympathy at her mistake.

"Here-- hang on. I can take some of your pain for a little while." She reaches a hand out to rest on somewhere as impersonal and uninjured as possible, intending to use magic to literally take his pain from him, feeling it herself instead. She can't keep it forever-- she has to give it back before too long, and it'd make her useless if she took all of it-- but at least while she's here she can do something.