X-link to the Non-Fiction megathread since this was written by a Catholic former nun and deals with some faith issues on the way to her becoming a former nun, so this might be of interest to less apostate Gentle Readers:
Free from the author via KDP Select @ Amazon:
The Scent of God: A Memoir by Beryl Singleton Bissell, an autobiographical account of her original calling and subsequent leaving, originally out from Perseus' Counterpoint imprint in 2006.