I would secretly transfer my properties since it is all in my name only, to my youngest sister since I would not want our daughter to have to choose between us. While that is happening, I contacted a private investigator to gather more evidence, and not waste my time confronting her until I was ready with the divorce papers seeking an at-fault divorce, since Virginia is an at-fault state.
Once all of the transfers of ownership, evidence is gathered, and the divorce papers are handed to her. I would suggest she signs them, if not I will see herein court. With all of my ducks in a row and the fact she makes good money, I would not owe any alimony and she may have access to my retirement, but I would have access to hers too. So a net 0 for both of us. In the end, I would go off into the sunset without any responsibilities on my back, since I did my duties and she failed in hers.
Last, yes I have thought about this and looked into it. I seek to always be as prepared as possible for potential eventualities. My wife knows this about me too, and that is one of the things she says she loves about me.