And Selina is starting to feel... not flat... But, not developing. I need a shock, something moving her again, in a new direction. But, not sure what to do with her...
Then you're already half way there. Begin presenting yourself not as a childs toy maker, but as a dominant sorceress of Anthos. Amount a following, reclaim all she lost. This is just one path of many you could take.
Hmmm... I actually like this idea. However, I'm looking for something personal, such as what Kvothe did to her, or Radahan, or you. Something that strikes her soul.