Somewhere around 2006 I read an unusual and poignant short story written from the perspective of a female werewolf.
An American college professor goes on a trip to Eastern Europe and falls in love with a 14 year old. Turns out she is a werewolf. He is ok with that. A few days a month he enjoys the quite normal company of an energetic dog, the rest of the time he enjoys an enthusiastic young lover.
The protagonist/narrator makes a point of talking about how werewolves get a bad rap. Yeah, they can be trained to be vicious. Her, she was trained to chase thrown balls. She was a good dog. During her dog days they go on long walks in the woods together. During her human days, well, the term "sportfucking" coined by the author and used repeatedly in the early parts of the story stuck in my brain.
But remember that saying that one dog year is seven human years? Right. At the end of his sabbatical the professor goes back home with his young-but-not-scandalous 21 year old girlfriend. She slowly learns to navigate the nasty world of academic spouse politics.
He finds a vet who doesn't ask a whole lot of questions but who does suggest that there are people who would pay good money for pups out of his "dog." Nope.
Fast forward a year or two. The sex has mostly stopped. Instead of long walks in the woods she spends her dog days chained in the yard.
Then it happens -- he brings a younger prettier woman home. She hears him griping about how his girlfriend ran off and left him stuck with her dog.
(I think this is where she starts making plans to leave him, but it's tough without proper ID...)
The next month... He takes her to the vet for a check-up. Well, no. She hears him in the next room saying sadly to the vet that the dog bit his girlfriend and needs to be put down. She is terrified but unable to stop it.
(I seem to remember a blurb saying the story would leave you wondering just who was the monster.)
I'm pretty sure that the title of the story was the werewolf's full name, which could be broken into two short nicknames, one used for human and the other for dog/wolf. Perhaps the full name started with "Ges" and one of the short names was "Jess" or "Jessie".
I have checked all werewolf anthologies from that era, notably Otherwere (which I did read around the same time and do recommend based on fuzzy memory of enjoying it) but nothing I can find in reviews or listings seems like a match.