My first thought reading your post is the old distancer/pursuer...Have you read MakeUp Not BreakUp. It really covers the whole distancer/pursuer in relationships. Why they do this (stems back from childhood). It sounds like she got very close to you today, a little too close for her comfort level and then had to back off to protect herself. Generally we think of men as distancers but believe it or not, we women can do it too (cough, cough). I think you did well by just letting her be. That is the best way you can handle it, then just be forgiving when she comes back around.
Actually I think you detach with the brain and the heart follows. Detaching from your mind is what helps to keep the rollercoaster less of a wild ride. There is also an excellent book called Feeling Good by David Burns that actually walks you through gaining control of your emotions. When you feel yourself attaching again, go back and read the post that NYS gave you. Perhaps even print it out and keep it accessible. It does help. I used to have stickies by my computer to help keep me focused. Trust me it does get easier.
Don't read into anything about the jewelry...remember she's on a journey...what may have been her style yesterday, may not be her style now and it might not be tomorrow. Take her at her word until proven otherwise. Is it worth spiriling trying to figure out where it came from? I didn't think so. My taste in jewelry honestly has changed through the years. Used to love sapphires...well now they remind me of Dave and so it's time for something else...anyone wanna buy a sapphire necklace...or trade for something different? LOL...
