What about a baby gate to block the doorway off?
Also, try completely ignoring the jumping and only reward when all four paws are on the ground. Hopefully realizing that only certain behaviours get rewarded will have her changing her habits quickly
Jasmine - Female Miniature Poodle - born Aug 15, 2010
Loker Delgado Von Stalworth - Male GSD - born Jan 26, 2012
Koda & Zazu - 5 year old male cats
Alex - Male Cocker Spaniel (rescue) - RIP Cuddlebug 2007-2010