Yes, every person has a duty of care towards their children, and no one is saying you have to feel sympathy for her.
The question is whether women with violent and sexually abusive male partners should be held criminally responsible for the violence those men commit.
Surprised (although I suppose I shouldn't really be, given how ready everyone is to blame women for EVERYTHING) that most here think they should be. Although I hope all the posters who support the jailing of women who fail to stop abusive men from hurting their children realise that it is the most traumatised, the most impoverished and marginalised women (who naturally have fewer economic, social and psychological resources to escape an abusive relationship) who will be the ones punished by the laws you are advocating.
Marjorie, note that 'performing an indecent act in front of her daughter' could have meant she was sexually assaulted by her husband in front of her daughter.