Oh yeah, feeding doesn't really cause any kind of permanent damage. Well, aside from the fact that it usually involves the tongue boring a hole into the person's flesh and everything that comes with that. But Razz already has a wound, so that's not necessary. And you probably won't have to worry about bloodloss at all either, since Ashborn is like two feet tall and incredibly thin; Ogwundi don't require much to keep going.

Also, nice pun. :D