Hi Pheonix,
I went back and read your other posts because some of the info wasn't clear from just this one.
Your W is currently in an ongoing A and has moved out of the house, right?
I wouldn't give too much creedence to her talk of "remember 15 years ago when..." - she dredges up negative memories to help her feel justified in her actions. The same is true of the "I love you but don't want to be married to you" - this is almost a required speech for WS! Usually though it's "I love you but I'm not in love wiht you". Some WS (wayward spouses) even "rewrite history" and remember things quite differently from how they really were. So when she starts this just let it go in one ear and out the other. If she is bringing up a valid point, like some EN you've not met, then use that to your advantage and begin meeting it.
You said in your other posts that you've been in a Plan A that consists of "being nice to her" - do you know her top ENs? Have you read "After An Affair"? Do you know what LBs you're guilty of and are you taking steps to correct that?
Your W won't be receptive to your Plan A while she's in her A and even for a while after it ends. She's too wrapped up in her feelings for OM right now and acknowledging your deposits go against her view of "how you are". When she does give up OM she'll be in withdrawal, very similar to what an addict experiences. She'll be turned inward and hurting, and not receptive. HOWEVER, continue to Plan A because you want her recent memories of you to be nothing but GOOD.
Regarding her statement that she'll "only write" there must be absolutely NO CONTACT for you guys to get over this.
For the time being, continue to Plan A her and improve yourself. It takes time, and a heck of a lot of it. Try to stay busy with activities you enjoy, and exercise.
Keep posting.