This kept coming up in the back of my mind...........you mentioned that she had moved several months back and your problem has been going on with her for several months as well (or months since she mentioned that the jewelry is missing).

Is it possible that she has the jewelry still packed up in a box and has forgotten - especially as she moved and then was busy looking for a job?

Why in the world would anyone steal jewelry from a good friend? They wouldn't, so I say, stay with her and it will be resolved. She may have to apologize to you.