She is Brazilian ex-military but got in trouble for her drinking and attitude and became a mercenary briefly but when she finished with that  she became a serial killer and found it to her liking as she’s no stranger to getting in trouble. She uses many methods and tactics and has no real pattern but she does sometimes keep captives to torture and then she releases them. She is a killer and kidnapper as she sometimes kidnaps for simple ransom or she may use a hostage for leverage.