Jennifer O'Brien is a fairly attractive young woman, looking to be in her late teens. She has waist-length auburn hair, green eyes and freckles, and stands about 5'4'. Her hair is often done up into a bun, with the remaining hair falling behind. She is wearing a green blouse and long darker skirt. Over this is a long white apron, with a large red cross on the front. She wears a kerchief, tied around her head and also white with a matching red cross on it.

She carries a dark brown bag over her shoulder, also with a red cross on it.