For what its worth, Alli, I nearly killed my Jade plant, too. You are not alone.
For me, I had a watering globe tucked between the stems...it was clogged with dirt and I didn't realize it and my jade--i imagine yours did this, too--stayed standing up and didn't wilt until it was so far gone, it was nearly beyond recovery. When I touched the standing stalks, they just crumpled...it was awful. Fortunately, there were several green stalks left and it is coming back now, slow but sure.
I hope yours makes a quick recovery! Jade seems to have the ability to really make one feel like as brown-thumber.
