She taunted Olivia because the latter was staring at her with obvious anger. She couldn't take it anymore but, she still needs to put herself under control. A grand plan is on the way for her to escape, according to what Medusa had told her.
If she shows Ruana her Vampire powers right now, there are chances that she will never taste freedom again. She might as well kiss goodbye to her life. She must tread with care because a mistake is enough to ruin everything. Despite being all aware of this, her urge to get revenge on Ruana was getting stronger. The taste of Ruana's blood seemed to be...