I would guess that your W will eventually find it rather hard to go without contact with you. Be patient, this all takes time. Some people decide they just don't want to put in the time it could take, but I sense that you can be very patient.
The A with om will probably burn out before too long. You said om comes in from out of town? Is he married or D? Does he have kids? I ask this, because everything added to it, makes it more complicated. He doesn't have the shared history with your W and kids that you do, so she can't just say "hey, remember when"? When she comes to her senses one day, she will see it was most certainly not all bad.
Good your D has a new phone, so she can always keep in contact with you. Does your S have his own cell phone, too?
