A few minutes after you exit the room, a werewolf catches up to Tara and you. The Beast hesitate for a second on which of you should be its first victim. To your surprise, Tara attack said monster while turning into one of its kind. Your companion just have enough time to scream "RUN!!!" before becoming too much of a wolf to speak.
You start doing just that, but can't stop yourself from looking behind you at the same time. Inevitably, you run into a wall.
A bit dazed, you suddenly hear a loud ‘crack’, a bit like bones breaking but far louder, followed by what sound like a human crying, and it come from the direction you came from. Gulping, you decide to go back, regardless of how dangerous you know this to be.
You find Tara back to her human form, crying. Slowly approaching her, you want to comfort her in the hope she would explain just what happened, but she take a step back, (an impressive feat, since she's on her knees) and urge you to stay back by screaming "Don't!"
Before you could ask anything, she decide to tell her side of the story. "Like I said before, I was one of their guinea-pigs. They experimented a vaccine against lycanthropy, but it only half worked, sort of."
"Sort of?"
"Yeah. At first I still turned into a giant wolf, like the others, but somehow retained my human mind. When the scientist discovered I was still myself, mentally at least, they saw it as a new opportunity. After all, they now had a werewolf willing to take their experimental cure by herself… But again, it only worked partially, and only gave me the ability to switch back between human and wolf, but not always on my own volution. Worst, I'm still contagious when I ‘go wolf’.
… And being covered in werewolf gut only make it worst."
"But, your strain of the werewolf plague let its victims retain their humanity, like you, right?"