Detaching and GAL are for YOU. They are to help YOU. She will not be "phased" by this, not right now, and maybe not ever. Accepting THAT is part of detachment, and the sooner you accept this, the sooner you will be successful.
My W and OM are together all the time as well. They work together, they talk on the phone in the morning and evening, they spend nights and weekends together. This is an indication of where she is right now.
OM is fulfilling needs that haven't been met, possibly for a long time. Getting those needs met is part of what creates the addiction, and the "fog". The taboo and the secrecy of it contribute to it as well, but sometimes on a nearly imperceptible level.
Since she is where she is, and you are where you are, there is nothing you can do to positively affect the situation. Anything you do try to influence it (directly or indirectly) WILL backfire, and she will see it as a control attempt on your part.
Work on YOU, reclaim YOUR life, and if SHE eventually decides she likes what she sees, AND is willing to take the chance, you will be ready for her. If she is not willing, you will be ready for a new chapter. Either way, you will be ready.
Stop focusing on her. You can't do anything with that right now. Focus on YOU, and focus on your relationship with your CHILD.
I see her statement from 2 weeks ago as keeping you on the chain. Let it be, and do not pursue it. Now is not the time.
Me: 30, W: 29 S: 4 T: 14 M: 5 BD: March, 2015, ILYBNILWY, IDLY, Need Space OM, EA/PA Discovered (drunken kissing, she says she stopped there? NOPE!): March 2015 S: April 25th, 2015