Andirrul sprang back quickly from the fury of teeth and claws, absolutely relishing this moment. She also ignited her two lightsabers, ready to leap into the opening stance of skorost' if Tyrannus managed to escape the monster and tried to finish her. She suddenly heard a whisper from the part of her that was Lord Virul:
"When I possessed you, neophyte, you had pure blood. Pure enough for that one to feast upon should he wish to. However, my nature is that of a disease, a fast-acting poison. The chemistry of your blood has changed enough so that if Terror tries to eat you--and he might if he gets hungry enough--one bite of you would kill him outright."
The Dark Lady shivered. That's good to hear. She continued to bide her time.