There are three candidates for Ascendancy that need killing: Dame Alys Finnsson, Master Klem, and Mia the Rose.
I want you to serve as a distraction. When the time is right, I'll step in to finish them off from behind.
Just make sure that whatever you do, you don't underestimate them, <name>. Each of those lunatics got to where they are by being ruthless and very good at what they do.
Completion
That takes care of most of their leaders outside of the Bastion. Not bad at all.
Each named mob has some welcome text for the player, and Garona has some rejoinders of her own after she kills them:
Master Klem
Master Klem yells: You've come for training. Good!
Garona Halforcen says: You're telegraphing your moves.
Garona Halforcen says: See you soon.
Mia the Rose
Mia the Rose yells: I knew you were coming. No one can resist me, not even you!
Mia the Rose yells: Find the interlopers! I know that they have someone sneaking around to the north!
Garona Halforcen says: That was fun.
Dame Alys Finnsson
Dame Alys Finnsson yells: We could have been civil about this, but no!
Notes
Garona will assist players in the fights by sneaking her way behind each mob. Her arrival time can vary, so be prepared to engage the mob for a minute or more. Once she does engage the cultists, the fight ends quickly.