Unsettled Spirits is the ninth (although as with many series, there's a little mix-up on that, depending on precisely what you count) in the Daisy Gumm Majesty series by Alice Duncan. This is one of my top ten favorite series, possibly influenced a bit by the fact that I went to school, lived and worked in Pasadena for many years. This may be a self-pub continuation of a previous traditionally published series, however, I've read and enjoyed it just as much as the earlier titles. It has dropped to $0.99 at Kindle US.
link:
https://www.amazon.com/dp/B0186ZDO2Q