Dear Looby. 
I am sorry  that you have had this experience.
 This is another tough one for you and it must hurt.  
 But, as you say, you are carrying on with your own life and plans.  And you have seen some positives in the way your son has been dealing with things this time.  You will not let this pull you down.
Thank you for sharing your thoughts and your story.
Stay strong – I know you will.  And I wish you all the best for your Anniversary and holiday.  Enjoy it to the full!!
Love, Monique xx
 Keep hope alive.