Don't even know where to begin. That email would have me scratching my head. She does sound upbeat...and as others have said makes this whole separation thing sound far to simple. Sounds like she is living in LA LA land. Alein spew, MLC...call it what you want. Sounds like there is outside forces here. Possible OP?
Give her the separation. Give her as much time as she needs. Things will clear in her mind sooner than later if you stop chasing and let go.
As a WAW, things did not change for me until I had been out of the house (fully separated) for about 3 months or so. Going to an empty duplex night after night when I didn't have my child was heart wrenching. I started thinking about my D4 and how my unhappiness would play out for her in the long run. But it took time. It took 3 months just for me to start to think about recovery. Basically I woke up one morning and I just wasn't angry anymore. I won't say I have forgotten the pain my H caused me over the years, I am just not so angry about it. Too bad for me it happened a little to late I think. We'll see I am still in the game.
I hate to say it but for some WAS the only thing that gets through to them is the reality of what they are doing. Separation means single parenting, two households on the same income...not very atractive once you get done to it. I am in the stinking poor house. My H has refused to continue MC and decided to date other people. Its easier for him as an LBS to run from our problems then work on them. I am still willing so now the tables had been turned on me. Ironically now I am the one using all the DB techniques. Nothing like that to bite an WAS in the arse.
Me: 30 EX-H: 37 DD: 5 Separated 6/07. MC for months, EX-H quit MC. Divorce Final 8/14/08. Trying to move on with new life.