Gordie,
Stay detached but pay very close attention to your interaction with your W while she is being this way. Is ther something different to what you're doing? Acting?

I think these may be positive movements.

M 10yrs T 13yrs
BD #1Oct 2015-PA between WAH and COW
BD #2 April 2016-WH resumed PA, she broke it off
Jan 2 2017 WH says he wants divorce
April '17-Letting go
2018 D busted
DD8, DS6, DS3