I havent read up on your sitch, but dont expect her to tell you the truth. Expect lies, more lies, and when they run out of lies, expect them to lie some more. If you ever have proof they are lying, expect them to become extremely defensive and turn it around on you.

So i would guess keep mouth shut would be the best option??

Together:20 years
M:3 years
Me:40
WW:40
S15
A suspected:5/17
AC:5/18
BD:8/18
WW in full blown R w/ OM
Still under same roof