I don't remember ever being seriously hurt or offended by anyone outside of my immediate family but something happened several years ago, shortly after my father died unexpectedly, that utterly (and somewhat literally) pulled the rug out from under my feet for several months. I won't go into details but (as is often the case) one of my siblings basically overwhelmed my grieving mother and talked her out of 95% of what we all considered family keepsakes. I've never been so angry, so disappointed, so totally shocked in my entire life.
I absolutely felt "dead" - I felt numb, I was hurt, I was angry, I really couldn't believe what had happened. For awhile I didn't want anything to do with this person, I avoided her, I didn't know what to do, how to move forward, how to ever regain the respect I'd always felt for her - I just shut down mentally and emotionally.
Time made things better. I thought my heart was so numb, so broken, it couldn't grasp what my brain knew had happened and it wasn't as much about the keepsakes that were taken as it was that someone I loved had behaved so poorly, had been so greedy, etc.
Time was like a tonic - things did improve In time I decided every bit of what was taken wasn't worth much of anything and it certainly wasn't worth compromising one minute of my life worrying about it. As more time rocked on, I came to the realization that I honestly didn't want the stuff - it was just that this person had left me feeling so betrayed.
As the years have progressed, I've practically forgotten and forgiven this person (telling myself that she actually did me a favor by cleaning-out everything

) BUT I very much do understand how something can hurt so much at a particular time that your heart and mind can't immediately grasp the finer points and you feel shut down mentally, emotionally and physically.
Time will, I really believe, mend much (if not all) of the disappointment and pain you feel right now. Good luck!
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Those we have held in our arms for a little while,
we hold in our hearts forever.