In my opinion, being a child that wasnt told, until the last minute- is a horrible horrible thing to do to someone. Granted, I was older than the boy who just lost his mother, I had just turned 16, and was told, "your father has x amount of days". I saw him at halloween, and 2 days before christmas is when he passed. Yes, I had more time with him, in phone conversations, as he lived in cali and I was here, than this boy had been given with his mom, but my father, and my mother (who had been seperated since I was 6 mths old) both had been talking to each other for over 8 mths, about this complete ordeal.. and never told me until halloween.
I surely hope they also let him go to the funeral, which was another mistake that my parents made, as they felt it would be "better for me" not to go to the funeral. Not a good deal. As he will probably have a hard time accepting the fact that his mother is no longer "here". He will have the memories he had with her, and such- but there is a difference between actually attending the funeral, and understanding and not going to the funeral, and having the last goodbyes, unsaid. The funeral is for the living, as all know- but it is also part of the grieving period.
To this day, it is still hard on me, as I only saw him one time from the time I was told, and never again. And with not being able to go through the "process" it is harder and took a lot longer for me to grieve. Anyway- this is not about me, but I do believe that he is old enough and smart enough to understand all the circumstances, and realize what is going on, without having to be hidden from it.
How sad that they didnt tell him. God bless him and his little heart.