She is an Executor of the Church whose job is to hunt down heresy, including creature whose existence twist the very laws of nature by occult means. They holds a great level of animosity towards Vampires such as Dead Apostle, True Ancestor,... Moreover, she is 1 of the 7 elite, cold-blooded Executors of the Burial Agency, a branch of the Church, who will do whatever it takes to fulfill their missions. She sometimes even cooperates with Arcueid (who is a True Ancestor) though she doesn't like it.