Spoiler
I did just as much mean "park her at the sideline" the moment i had enough for a full party.
When eventually killing her i think she were just level 6.
But yeah on the second playthrough the amount of hints are staggering.
Like just for a start how every time you find her its besides a mutilated corpse.
I had expected her to be evil.
Not that she were a psychotic serial killer.