Suddenly she's busier than she's been in a while. Her head is clear, she has a goal, and she has a plan to reach. And she has an apprentice to train. That was a bit unexpected. But it would be... nice, not to have to do everything herself.
Thanaton has a power base. She has a ship and a four-person crew. She needs allies. She's working hard on getting an in with another Council member, and getting at least one of the Moffs to buy in. She trades on her time on Balmorra as much as she can. If her challenge to Thanaton can be seen as legitimate, she'll be more likely to survive it.
It's fortunate her apprentice is already half-trained. She can set them to readings and exercises that don't require her direct supervision while she deals with other matters.