Julie Jacobs
From Jenny Everywhere Wiki
In one universe, Julie Jacobs was a resident of Westbrook, Wisconsin, the older sister of Jenny Jacobs, the local incarnation of Jenny Everywhere. Jenny, Julie and Jordan were the adopted daughters of Simon Jacobs and his wife.
Julie and Jenny got along well, although they teased each other as sisters often do. Julie was more elegant than Jenny and boyfriend often gifted her expensive necklaces, most of which, as Jenny noted, she rarely wore but bragged about often. Unlike the Jacobs parents, Julie was not aware of Jenny's shifting powers and her double identity as a superhero. (COMIC: The Jenny Everywhere Chronicles)
Behind the scenes
Julie presumably takes her name from the early proposed name for Jenny Everywhere in development, “Julie Everywhere”.