Your post is exactly why we have a divorce epidemic in our society. What ever happened to love and committment until death do us part? And why do you stereotype men so? Hopefully you are just YOUNG and naive. If it's not OK to stereotype and judge women, than it shouldn't be OK to do it to men! Geesh!!!
To answer your question, she DEALS with the "lowlife" because she LOVES him, has children with him and values her marrital committment that she made before God. It has nothing to do with money. It is obvious that the two love eachother; he simply needs some help on the issue of "beauty." People (especially parents) shouldn't just take a walk away from their vows when things get tough (not unless there is abuse or another issue that is deadly). It's time for adults to grow up and start working together to make their marriages stronger.
This couple WILL now get the help they need and their marriage will thrive. They will do it for them, for their children and for God.