About 21 years ago, I got my son(4 at the time) a black lab puppy. This was his first dog so you know how special that was for him. A week after we got the puppy, I backed over him leaving for work.
All day long he went looking for the dog. I wanted to be the one to tell him what had happened. I practiced and cried all day on what I was going to say. I got home and sat him down and just told him exactly what happened. He said OK, can I get another one?
It was way rougher on me than it was for him. Things like this happen. This is just one of those puzzle pieces of life. It will all work out.