She's bringing some of these men into her home without knowing much, if anything, about them. For all she knows, the guy could be dangerous and harm her or her sons. At best, that's reckless behavior. And yes, I know that she was married to someone who did physically harm her, so getting to know someone first isn't always a good screen, but to just bring home randoms is a bad idea as well.
There was a 48 Hours episode a few years back where the police were trying to determine whether a woman had slipped or was pushed, while she fell off the side of a cliff while hiking. I may be wrong, but I do think they were able to do the calculations as to where she would be in a situation where she slipped versus being pushed, even though the distance between the two was not huge.