"Oftentimes, a woman is trying desperately to make this relationship work so there's a father for the kids," Campbell said.

It seems like in some of these cases the women had children very young, when they and their lives were not stable; plus they had unstable partners.  Hopefully long term birth control methods now on the market will help alleviate this, if we can convince young people to use these methods, and/or not to have children until they and their partners are stable.  If there were no children involved, maybe these women could leave their unstable male partners.