Ahoy there mateys! This is the second book in the series dealing with space nuns.  The Order of Saint Rita is in crisis from standing up to Central Governance.  They are on the run, suffering from PTSD, and upset that their actions seem to have led to revolution which, of course, is in opposition to their mission of aid.  This is a quieter story which was more like a character study then a plot-driven narrative.  The ending felt like closure on the world and the characters though I would read another book in this series if there is one. Arrr!