Stop in for a cup of coffee

Is it normal for someone to still be in deep mourning over a dog that’s been dead for 2 weeks now?

Growing up on the farm, I’ve never got attached like that to an animal. Seen too many come and go. But man, my wife is still in hysterics every evening now since her pup got ran over, 2 weeks ago
Just a thought, post-partum depression can last for years.
This may be part of it.