Speaking broadly: like many people in power, she wishes to hold onto that power. There is someone in our midst trying to take that power from her, and from all the gods. She has certain ways of chipping away at his army; regretfully, they usually have quite the body count.
Speaking personally: she's shit at guarding her contracts from loopholes, and I managed to introduce her son and heir to his future boyfriend, who is also, regretfully, Thanae's current enemy #1. No coming back from either of those.