Well, let me begin by saying that; There is no single lady, who would willingly love to be a single mum, except out of frustration. It is frustration that makes a woman becomes a single mother. And some of these frustration, is caused by wrong choice of relationships, careless living by following wayward friends or sometimes already married but divorced due to unfavorable marital conditions, like: insecurities, domestic violence and so much, or she herself doesn't have a good behavior and life style, so the spouse can not endure his days we her.
To this effect, after having a kid or few kids, she is put away and remain single. It is frustration. It is not a thing to be celebrated but again there is nothing anybody can do about that. So, God doesn't judge them because He knoweth better than we do.
It is not the will of God for that to happen, but yet it has happened because most of these women doesn't seek the mind of God before they enter into relationships. And a whole lot of them, has God blessed with a good husband, but bad character returned them back to singleness. But because God loves everyone,and understand us even better than we do understand ourselves, they are always loved by God.
So, the society or the church shouldn't see them as they are the worst sinners, they are not God loves them even as He loves everyone.