Yes, she has. Openly does so in front of her inner circle. At times she uses it as a manipulation tactic.
Is there anything about your villain that makes them a (at least somewhat) sympathetic character?
Ooh, yeah.
My arc "villain" (more of antagonist, I suppose) is a cruel, despotic king. Why? Well, he was brought up in a family where his father, the previous king, played a game of ever-shifting favourites with his sons, where losing your favoured position could land you in prison, or worse.
His older brothers, rightfully fed up with this, eventually killed their father, but then fell to fighting among themselves, as their father's treatment had been planned to encourage. My villain was imprisoned by his oldest brother, who was then killed by the middle brother. Eventually Villain was sprung by concerned citizens when middle brother started losing his mind to paranoia. Villain raised an army, defeated middle brother and tortured him to death, then became king himself.
This whole dysfunctional dynasty taught him:
1. Don't trust anyone.
2. Especially don't trust brothers.
He was mentally well enough to have some affection for his own heir. But he only wanted ONE heir. More than one son (even an illegitimate one) terrified him that the same internecine warfare would break out. So, the best way to avoid this (in a culture with no real birth control) was to kill off all but the healthiest, strongest son whom he would love, and who would love him back.
Sucks if you're not that one son, though.
Question: Who's the one person (if any) your villain would trust their life to?