She loves the kids very much and cannot stand Elaine, though she tries to hide this from the kids.
As a very kind hearted care worker there for anyone, she was also very strict as much as she was childish. She also has a passion for chocolate, being someone known to raid the treats cupboard when no one was looking.
When Jenny left, everyone was extremely disappointed, and it took them a while to get used to her replacement, Shelley Appleton. Shelley sometimes became annoyed when ever she would do and say anything, they'd reply to her "Jenny used to do this", "Jenny used to do that", "Jenny used to let me do this".
It's unknown why Jenny left, but it's possible she moved to New York been as she has relatives there. And Amber told Justine and Louise that she might be off to work at a different care home in New York. Amber was only joking, trying to mess with Justine and Louise's heads about this, but it's possible it was foreshadowing Jenny's departure.
Throughout The Story of Tracy Beaker
Jenny appeared in only the first two series of The Story of Tracy Beaker. Although, her animated character was used a few times during various animation sequences. (Movie of Me, Democracy, Tracy's Fantasy)