I can understand the frustration and the lack of control in trying times....question is whether there are any other injuries from other times to suspect ongoing abuse, or was this a single deadly time?....
In hind-site it’s obvious she should have asked for (more?) help. There should be no shame in declaring that you’re at the end of your rope.
I don’t mean to defend her actions. If she is guilty, she should be prosecuted. But I’m not calling for her head on a pike. It is simply another occasion to state “There, but for the grace of God...could have been me...”.