Why ?
what happened with jenny in the end...
shareWell .. there is a lot of difference between book and movie, but in the book you have a big epilouge (sp? sorry - german) which tells you the rest of every significant character's life.
I don't remember it too well what happend with jenny, I just know she loved her remaining brother very much .. oh and she got into medicine and became a doctor - now I do remember.
Not sure if that answers your question.
"Stop trying to control everything and just let go."
- Tyler Durden in Fight Club