I think that it is futile for someone to speculate on how another person reacts to a situation like this.
My sister/bff had a 2 year old dd that died in her sleep. She was sleeping in bed with mom and dad after being up in the middle of the night of a cough. They fell asleep with her between them reading a book to put her back to sleep.
Within an hour of the 911 call I was at that house. I saw and heard what coroners and LE did and said.
There were no signs of misconduct, and later that was ruled out completely.
They referred to their dd as "the body", the room as the "crime scene," and her parents as the "perpetrators."
All of this is name of business as usual. You do not know what kind of damage that does, even now, years later. Those words still haunt.
In the days following no one reacted as you would think one would. One day her dd's bedroom was comforting, the next it was too painful. One minute she wanted to snuggle in her dd's blanket, the next she was packing all of the belongings out of sight. One moment she wanted to hold her dd's body, the next she did not.
What I found was that only one adult fell apart at a time. One was passive and in "shock" mode and the other was totally sad. One was in ticked off mode and wanting to get answers NOW and the other was the peace keeper.
One moment you need to be broken and the next you need to take care of business.
There is absoultely no predicatabilty to people in a situation like this. Grief is a monster that comes in and takes over. These people are not thinking rationally.
It is futile to try to figure out what they are thinking or why they are acting the way they are. They have no clue what they are doing. They are on auto-pilot.