I got recommended a scifi book, skimmed it and found it interesting but now cannot recall or google it's name anymore - perhaps someone can help.
The core concept was about some heroine whose nation was assimilated by an evil empire taking her revenge by joining its bureaucracy and working her way to power within that.
The cover had a picture of a mask, I believe.
The book was fairly recent, probably 2014 if not 2015.