Did you ask to see her crystal ball? (Since she is so certain of how things can or can't be between you in a future that apparently only she can see into)
Did you ask her if the love you guys did have was there when you first met?
Did you ask her if it wasn't there when you first met, where did it actually come from?
So if it wasn't there and it was actually created, isn't there the possibility that it can be re-created?
Your previous interchange was just fine. Hopefully she will go to see someone. Keep taking care of yourself.
On telling the kids - I'd tell her you don't feel comfortable doing that at this point. Tell her you'd like to be further along in the process with logistics and all before you guys discuss anything with the kids. In my opinion it is still way too early to be telling the kids - but only if you and your W are being civil in front of them.
As you have learned - DON'T talk to family and mutual friends about what is going on. It bit you in the ass, now don't do it. Once you start talking to family and friends they begin to take sides and it makes the whole thing even messier than it already is.
Vent here. Vent to a friend IF they are tight with only you and can withhold judgment. It's best to leave family and friends out of it if you can, but I do realize there isn't anything like a real live person to talk to - especially if it's someone who knows you very well and will support you in however you chose to handle your sitch.
The BFF thing is a fantasy that many WAS seem to have - especially early in the process. When you read around the boards here you will see it's almost as if she is reading from a script. My W said and did many of the same things your W is saying and doing.
MySitch Me-47 STBXW-41 D-5 S-8 ILYBNILWY-01/08 Want a D- 01/09 Physical Sep-01/10 D filed-06/10 Got 50% custody=09/11 Ride that wave!