I’ve never been good at these things, but submission necessitates learning. Here’s what I’ve come up with:
A young woman learns that the veil between worlds is very thin as a war between the heavens becomes very real to her; in the meantime, a rogue spirit fights for redemption.
It needs some tweaking, but it could be back-of-paper-copy print one day. Just maybe. Writing up paragraph-long summaries of Books 2 and 3 is also very enlightening.