Doggy, you're going to get conflicting messages from your W. one bad day, one good day, one day she calls, one day she doesn't, etc etc. this is the way it works.
there will be times when regardless of your words or actions, they will be wrong. if you went back 20 times, and tried it differently, they would still be wrong.
one rule of thumb is always call back when it comes to your children, and play the rest by ear. you dont have to call back if you dont feel up to it.
its my own opinion that the WAS will try to be friendly to alleviate their guilt over what is happening, as if we respond friendly in return, then it isn't so bad. there are those here who would disagree with that.
at this point, the only thing you can do is take care of yourself and fix yourself, take care of your children.
people here have been through much, and each has their own perspective and ways of thinking and responding. feel free to ask someone to step away, i dont think anyone would be insulted.
"In a ham and eggs breakfast, the hen is involved, but the pig is committed".