I would keep the phone records to myself. Once the WW finds out where you're getting information from, they'll switch things up to keep the A underground...
I've seen mixed views and results of exposing the A to the OMS. I'm sure it probably feels good in the moment, but I feel like it would cause more problems in the long run. WW get mad when you start meddling in their fantasy. Like I said, I've seen cases where it benefits the LBS and cases where it doesn't...
I think you're definitely making the right decision regarding not going on the trip to see her family. I don't think it will affect your kids as much as you think. It will most likely get her wondering what you're up to, and that's good...
Me: 38 W:31 Kids: S16(mine from previous R), D10, S9, S4 M: 10 years T:12 years BD:Jan 3, 2018 W moved out: Apr 13,2018 Filed for D: Jun 2018 D final: Sep 2019