The name "Jenny Elsewhere" should be available for anyone to use in any way they see fit... but the character herself is a blank slate. How she looks, how she dresses, her character quirks, what her agenda might be - it's all up to the individual who wants to do something with the name. Anyone can create their own Jenny Elsewhere from the ground up. In a nutshell: Use the name, make up the rest. Of course, one is not required to follow the "Jenny Elsewhere" name and scheme, but it should be a fun idea that people can play with.