A tough call, but I think you're right about sitting back and letting her make all the mistakes that a new LBS makes: pleading, giving ultimatums, etc.
You're D right? So he's a big boy now and needs to figure things out for himself.
I'd continue doing what is suggested here - listen, validate, stay calm, composed, and womanly - let her do the damage.
Me 56 H 47 Married 21 years No children Bomb & moved out 4/07 "My feelings have changed" & "I want to live by myself". Ow Bomb 8/07 H filed 6/08 D final 2/05/10