Back in January 2006, Jelynn guest-starred on the Nickelodeon show Ned's Declassified School Survival Guide as a substitute teacher, Miss. Modelle. I made a post about it which you can read here.
I saw today that the episode is available for purchase on iTunes. For only $1.99, you can download the episode and watch it whenever you want. It's a nice way to watch it and support Jelynn if you do not want to wait for it to rerun on Nickelodeon. Open iTunes and click here. It should take you to where you can buy and download it. If that does not work, do a search for the episode Guide to: Substitute Teachers & The New Kid.