There was a story by Lois McMaster Bujold in the Miles Vorkosigan universe. Mmmm. I want to say "Brother's in Arms", maybe? No, it was before we met his clone ("Brother!") Mark. Miles had the Dendraii Mercenaries out at Jackson's Hole for a black op for his homeworld of Barrayar to swipe a scientist. The scientist in question had been forced into a super soldier side project (isn't there always when there is genetic tinkering going on?) and wouldn't leave until Miles "corrected his mistake."
(ETA; Found it. "Labyrinth
There was more to it, of course, but the relevant part was the "super soldier" in question was indisputably female (Miles named her "Taura"). I've pretty much come away imagining something like a werewolf or a WoW Worgen from the descriptions.
Anyway, throughout the series, there are about three or four romantic interludes between Miles and Taura (whom he recruited to join his "mercenary fleet"). I think you might be interested in what she did with it.
In a nutshell, though, Ms. Bujold more or less stuck with describing a teenaged girl with some ramped up hormone issues (not to mention psychological from being viewed as a monster) (I nearly peed laughing in the scene where she tried to be less horrifying for the kids they were rescuing by tying a freaking bow around her neck. Six foot four with a lupine snout and fangs and she thought a bow was going to make her less scary!), but careful attention was paid to the differences like fangs and talon-like nails, or how different it was when Miles kissed her.
(ETA; since the contest is long over, I'll admit I cribbed the basic idea for my winter holiday contest entry from Miles and Taura. Not monster, obviously, but...)