I totally get what you're saying about your W coming up with a laundry list of reasons why YOU are the reason the M fell apart. I too have probably heard 10-20 reasons why I am 110% to blame and why OM is the solution. Probably has a lot more to do with her own rationalization process rather than what's real.
Sorry to hear about your in-laws, man. It's terrible just how cold people can be in a sitch like that. But then again, blood runs thick. Their reaction doesn't surprise me.