There is no such thing as a broken family. Family is family, and is not determined by marriage certificates, divorce papers, and adoption documents. Families are made in the heart. The only time family becomes null is when those ties in the heart are cut. If you cut those ties, those people are not your family. If you make those ties, those people are your family. And if you hate those ties, those people will still be your family because whatever you hate will always be with you.
This is the whole stupid thing about all these unblood relationships. They depend on people staying the same, standing in the same spot they were in over a decade ago, when they first met. Surely the reality is that connections between people aren't permanent, but fleeting and random, like a solar eclipse or clouds meeting in the sky. They exist in a constantly moving universe full of constantly moving objects.