Maillol sits Asmodia down and gives her the Talk.
When it's okay to undermine your colleagues. When it's okay to amuse yourself by tormenting your subordinates. The relatively rare circumstances when you should try to kill your superior and take their place, you are a lot more likely to get away with that if your superior wasn't valuable and isn't anyone's pet and was being visibly incompetent and you are clearly more competent than they are. Be conservative about that sort of thing, a lot of people get themselves worse-than-killed by having a self-serving bias about it. The tyranny is not there to be your friend, it's not your superior's friend either, obviously, but all else being equal the tyranny wants both of you working for it and producing for it. They're going to check whether any apparent incompetence of your superior was actually you sabotaging them. Encouraging that sort of game is not in the tyranny's interest.
Your fundamental job responsibility that isn't directly to Asmodeus or yourself is about making your boss look good. If you try to kill and replace your boss, it had better make your boss's boss look good, and that's harder to pull off than you might think.
Seizing your boss's job without killing them is unreasonably advanced for somebody Asmodia's age. Anybody you've replaced like that is likely to hang around severely resenting you. Your boss's boss knows that, they mostly won't promote you into somebody else's place unless they're ready for them to die, or they have some other position to send them to where the two of you won't get into trouble with each other.
Also, Asmodia's boss is, depending on how you look at it, either Maillol, or Sevar.
The main moral of the Talk is that Asmodia should not try to kill her superiors and seize their positions until she is older.