Mothers tend to be; more emotional, responsible, and the commitment to their children.
First of all and the fact that women are actually attached physically to their child before he was born nine months ago and carrying him for that long means a lot and had suffered a lot , so logically there is an emotional attachment to their child and there is nothing can deny that. Also they are from their own flesh.
In fact, that I think women in general feel more responsible toward their children, it has not only to do with the caring aspects but also who keeps them socially engaged, whither it was to their grandparents or else . and the fact that courts give custody to a mother most of the time , gives us a clue that mothers are responsible much more than a father , because fathers are more at work and concerned more about having money and place to live