Mab was more reluctant to kill Maeve than Nico was to killing Deirdre. Deirdre was a more devoted daughter than Maeve was.
Interesting. Is the sacrifices one makes for one's daughter (and sons?) an indicator of how good a person is in the DV? From best to worst:
Harry - Willing to burn the world to save his daughter.
Charity - Risks her own life to storm Arctis Tor to save her daughter.
Maggie Le Fey - Makes provisions to provide for her children after she is gone.
Ebenezer - Verdict is still out, but likely not much worse that unintentionally making some bad parenting decisions.
Mab - Asks to have her daughter killed (and ultimately assists with it happening) but tries to save her daughter first.
Titania - Refuses to rat out her daughter even though it will lead to a Faerie apocalypse, and holds an eternal grudge against her daughter's killer despite that the death was necessary.
Duke & Arianna Ortega - Go to war to avenge her death, but only after steering her toward events that lead to her death (am I wrong that Bianca's creator was the Ortegas?).
Victor Sells - Neglects his children in a quest for power.
Papa Raith - Down right awful to his daughters AND his sons.
Nicodemus - Kills his daughter for self-serving reasons, also much of what Lord Raith does.
Additions? Disagreements?