Lily? Yes, in Masters of Maria.
Kenny? In a future series spin-off if the stars align the right way (in other words, if the market is right).
Diana? Yes, but her book will be a stand-alone outside of Masters of Maria.
Lance? Yes, in Masters of Maria.
Apollo? HELL NOPE. (Redeeming Gulielmus will be hard enough for me. I don’t have the word count to make my interpretation of the Greek god likeable.)
Sheena? Already written! It’s a novella set in the fall after The Coyote’s Chance. This wasn’t at all a planned story, but I felt so bad for her. What happened wasn’t her fault, and I needed to show she’d be okay. Keep an eye on the site for news about when it’ll be available.