User blog comment:Tommy,Klaus&Kol2012+/Will the writers kill off michael in the midseason finale episode-the spear?/@comment-10889355-20181211010625

Kaia was only written into the Michael plot. She’s not meant to have a “big” storyline, or an standalone arc at all, that will affect the main plot of the season. Once Michael is defeated, most likely in the midseason finale, they’ll focus on Heaven and The Empty. Not Kaia.