Yep, W is likely going to become highly secretive. Step off the roller coaster. Turn away from watching the upcoming train wreck. Focus upon you.
As to the business, watch the accounts. Watch the credit cards. Be prepared. Or better yet, cancel the joint credit card(s) and get your own.
In my case, cancelling the joint credit card required me to completely pay it off first. And we just had a family vacation six weeks before the big bomb drop and her announcing and moving out with OM. There was quite a balance on the card which was a bit problematic. Still, it needed to be done.
A long time poster, and good friend, her husband took his paramour on a vacation, put the tens of thousands of dollars in charges on their credit card, and expected her to pay for half of it. Well, she is a strong willed gal, and she blew apart that fantasy of his in pretty short order.
Your W has filed. Be business-like when dealing with her. Protect yourself.
D
Feelings are fleeting. Be better, not bitter. Love the person, forgive the sin.
