Jessica's only appearance so far in the series is in Hollow City, when Olive noticed her crying in the train station. Despite the blanket and cardboard suitcase that she was carrying, Olive didn't understand that she was a refugee, and mistook her sign that reads "115-201 London->Sheffield" as a price rather than directions.
Olive tried to comfort her by telling her she'd set her free if she could, which only made her angry and sad. Jessica tore off the sign pinned to her blouse and told Olive that she didn't want to go live in the country. Olive sympathizes with her, telling Jessica that she also didn't want to leave her home, but had to after it was bombed. The two then become friends but Jessica soon had to leave Olive to board her train.
Jessica is a young girl with pigtails. Due to her crying when she was introduced, she had puffy red eyes. She carried a blanket and a raggedy cardboard suitcase, and had a tag pinned to her blouse that stated she was being evacuated to Sheffield.
- She is second youngest Coerlfolc mentioned in the series, after Esme.