Hey hey I hope a comment about the event AU here is cool, since I didn't see a plotting thread for you over there! But I've been searching for a catalyst that would have fully turned Callisto on to wanting to join up with the Kestrels, and I think the story of Glimmer and her mom would fit the bill if you're up for it - maybe they knew each other as neighbors turned friends / people who were quietly sympathetic to the Kestrel cause but not up for fully joining the rebellion, and then when Glimmer's whole thing happened Callisto went "wow no fuck this actually" and decided to officially join the Kestrel cause?

Callisto's schtick is going to be that she'll have her real memories but will be trying to play along regardless, and I've really liked her threads with Glimmer so far; I feel like having a connection in the AU could lead to some interesting places for them post-AU!