Mortal Veil
Tamsin, post 3x06.
Tamsin hates-
No, that's a lie. She loves unveiling her true face, letting the mortal seeming drop away.
There's always a price to be paid. It had been decades since she last unleashed her power. That she loosed it for this succubus and her human pet...
More than a pet, which was perhaps the point. Bo and Kenzi have a true bond, like to that Tamsin used to know with her own sisters. Of all things worth fighting for, that was the most precious. Perhaps she was becoming sentimental in her age.
Perhaps she's finally met someone worth fighting for.