Reincarnation

I'm looking for this manga, it's about this girl who's oarents were corrupt, and they all got the guillotine during the revolt lead by her first love. However she gets reborn when her first love is the ruler, she decides to attone for her families behavior and plans to be a nun however she becomes a maid for her first love (who now is 15 years older than her) and the first love tries to feed her treats