Clockwork Syringe
The Night Blade
I'm making her a patriotic one. I'm thinking that her family was a part of the Council of Kings and they got killed and some such, making her go into hiding. Then, goes to subscribe an "Eye for an Eye" kind of mentality, becoming an assassin and inflicting the same damage the Imperium made her go through. She's evil only at the Imperium and is known by the general Kalder populace as a woman who likes tending to her plants in her home, not knowing it's poisonous as hell.
I really like that character backstory tbh.