If I may interject an observation in support of how H4U is feeling:
Yes, your W agreeing to the NC letter is no guarantee she will really comply (adulterers lie, we all know that.)
But then your W dragging her feet about NC is (to me at least) a sure sign she is not really sincere about making the M work. She may still only be ambivalent, rather than trying to be outright deceitful, but I think we can all say she is definitely not certain about working on the M.
