Mom kills children-- will the dad be blamed?

Another very sad story about a mother who killed her children. It's a choice that perplexes me: why a parent, mom or dad, would choose to kill their kids--and, alas, we know dads do the same thing. In a related story, some commenters are already trying to blame Dad, claiming he was abusive. It seems to be part of our culture--women are never to blame for their choices, but some man is. Women are full adults when it comes to their rights, minors when it comes to moral culpability. Or at least it seems, especially as the media did its best to blame the father for the mother who drowned her own kids in the Hudson. In the end, however, it's just plain sad. And I don't know how to prevent these things. Does anyone? Excerpt:

'CASTLE ROCK — The mother arrested Monday for the murder of her two children called police at 7:48 a.m. to report that she was trying to commit suicide.

When asked by a police dispatcher whether there were any children in the home, the mother replied: "They are in heaven."

When police arrived at the Founders Village home of Kelli Lynn Murphy, they found 9-year-old Liam and his sister, Madigan, 6, dead in their bedrooms. Castle Rock Police Chief Tony Lane said the bodies had no visible signs of injury.'