She reaps what she sows.
You're exactly right. Unfortunately, her child is going to suffer for what she did, so instead of feeling sorry for herself and the other "single moms" she should feel sorry for her son, and the children born to these women. From the looks of her son, he's biracial too, which is going to make it ever more difficult for him.
What she did was very selfish, to say the least! There are still some of us with morals who abstain from shacking up. It's not easy sometimes, so you just do what I did. Move to the country and stay away from temptation! LOL If they don't know you're there, they won't come knocking. :o)