She's not too smart if she has seven kids.
As long as she has the support of the man who fathered all the seven, she will be okay. She holds a degree as well, so she is not your average. Personally, seven is too many. But everyone makes their own decisions in their life. People have reasons and hopes, fears and desires for something.
It is easy for me to judge sometimes why someone would do something that seems hard to me, but to them, they are equipped to deal with the hardship perhaps, and for that, I respect them.