My buggy blew along a raised path one time and fell into a bush
It was very light and the baby wasn't in it thankfully. Crappy brake just hadn't engaged properly. I went and got a decent pram a few days later with a decent brake that worked.
It could have happened to anyone. Most of us are lucky, some are not.
I can't imagine how awful the parents must be feeling, not sure if I could cope at all losing a child, let alone finding out my husband wasn't the man I thought he was at the same time.
Wishing them all peace really though it may be a long time coming.