(((Dan))), I know this is hard, but I have said it before and will say it again. There is only one person who can determine how much you can take, and that is you. If your W having an A is a deal breaker for you, and that is all you can take, then you need to handle it the way you see fit.
Have you asked W about an OM? It's a little early for me, lol, and my coffee has not kicked in yet...so I don't remember. If she has said no, and you want to hire a PI, you are well within your rights to do so.
Im still standin better than I ever did looking like a true survivor feeling like a little kid Im still standin after all this time and Im picking up the pieces of my life without you on my mind..