She is a teacher and Sister at Harrison Morgan's preschool.
Sister Daniels was first seen gathering the children at Harrison Morgan's preschool for lunch time. Later, she was the organizer of the Noah's Ark Pageant play where she unknowingly let Harrison slip away with religious killer, Travis Marshall. When Dexter Morgan asked Sister Daniels where his son was, she told him that he had already left with a man wearing a lion's mask. She looked distressed when they realized that Harrison had been kidnapped.