They weren't really 'lost' though, were they? They didn't fall down the back of the sofa. Two of them were murdered.
First, he scared his wife enough that she woke a relative in the middle of the night. Then he murdered her and his 7 year old daughter. Then, to avoid the consequences of his own actions, he killed himself.
This type of family annihilation is an act of violence. In over 50% of cases it's an escalation of domestic violence.
To be completely honest, the thing that upsets me most about comments like this is that it is exactly the sort of thing I would have said 20 years ago, when I still believed kindness was the answer. Hint: only 1 sex are expected to provide this kindness, and it's not the sex that is doing all the killing.
1st rule of misogyny: women are responsible for what men do
10th rule of misogyny: the worst thing about male violence is that it makes men look bad