Went for a very long walk and by chance I bumped into only Aunt of W. I said that W and I had split, She said "I'm not surprised, let me guess FIL is involved and they have been taking money". I was amazed that she guessed right. She said he'd done things like that to her - her own sibling.
The aunt said my IL told her they were renting a house locally. I told her they had lied to her, they own the house. We exchanged phone numbers.
I then went into a L office and explained W is hiding money in advance of D, so I may have to D her first. It is such a shame that it has come to this.
