Some of the conversation occurred on her Slack server, which as of an hour or two ago was still completely open/public via an invite linked shared on Meetup.
The entire server chat log is a few Google searches away.
Right. It was an open Slack group. It's likely the Special Agent is the source of those logs and photos; no need for Slack to confirm anything except for metadata to authenticate the logs (if that's even necessary for yet another nail in the coffin).