Thanks for posting the link to a lovely story, Marval, and thank you too, Barmaid, for the equally lovely doggy video.
Returning to the theme of children with parents in heaven, and combining that with tear-jerking videos, take a look at this young lad (in the Dutch version of The Voice Kids) singing the song which was played at his mother's funeral.
I just 5hink it could be very confusing for the boy. If a postman can get a letter to the dad why can't they visit? Why can't the dad reply? I suppose I am rathere coloured by the fact I get loads of questions about heaven from my six year old who goes to a religious school. I always tell her that not everyone believes in heaven including me :)