I have seen similar situations to what you're describing, and often the person/ people being evicted have done it to themselves through wreckless spending, failure to plan for the future and poor work ethic. Then when it's time to suffer the consequences, suddenly they want to run home to the parent or parents they've been treating like crap for years and mooch off of them until they can "get back on their feet". Many of these parents do take them back and discover that they can't get rid of them after that. Then they're faced with the awful decision of having to legally evict their own offspring, or let them stay indefinitely and eat away at whatever meager income they may have.
Letting your grown kids move back home is almost always a lose-lose scenario. If I were you I would just stay out of all that drama and not criticize your W for her choice in the matter because it may very well be the right choice for her AND for her D.
