W replies to T the same as she does with me or anyone else on the subject of OM. Whenever I allude to W's infidelity, she always dismisses it, passes it off, saying that the OM was not a factor in W deciding to leave me. W says she can never live with me ever again because of me, not OM.
W tries very carefully to never acknowledge the OM. I think her mother and maybe her legal counsel have advised her to no longer say too much on that. She never ever admits wrong now (that's her mother's playbook.) She continues to only say that OM is her "friend".
Still, one doesn't typically plan ocean front weekend getaways, buy mobile phones and put someone on your cellular "family" plan if they're only just a "friend".