OS,

Your updates are painful to read. Are you aware of the definition of insanity? I’m afraid you’re weakening your position here. IC is not a positive action IMO. If she gets the wrong IC it may and probably will make matters worse. Relationship books mean didley right now because she could take tips she learns to use with OM.

Don’t try to force infidelity books on her.

Here are some positive actions:
Gives you all passwords to devices you can check anytime.
Sends NC letter to OM in your presence
Schedules and actively participates in MC sessions