This woman, however, has children with different last names, and she has a last name different from any of the kids. My bet is that she is a narcissistic, man-user, NOW member, who marries them, has kids with them, decides she's "not happy" in the marriage (and of course it MUST be all his fault!), divorces him, soaks him for everything she can get, talks him down to his children, then remarries and starts the whole agenda over again.
I'd guess that the guy felt so helpless, so used, missed his daughter so badly, and could find no way out of the legal morasse his ex has put him in. It happens over and over in this country. Until our government learns to look at each incident fairly, and starts requiring some guidelines for these women, not just the men, and stops using our children as pawns, and begins to look at men as valued individuals, entitled to a life as well, and not just as sugardaddies for all these self-absorbed women, we are going to continue to see this kind of tragedy. Men may not suffer from post-partum depression, but they sure as heck suffer from post-divorce depression; and so do the people in their lives who love them.
So stop the crap of whining for the poor woman. Hurt for the lost children, definitely, but understand that often times it's the man who is the initial victim. And our society, and government, are condoning it.