I understand your hurt and frustration that your W didn't help out after all (or even text you that she wasn't going to make it), but honestly, I'm not surprised. WAS' seem to be very unpredictable by nature. Also, the idea of engaging in this close kind of activity with you after months of limited contact might have scared her. She's scared of you, she's scared of themselves...and running's the easiest thing she knows.
I wouldn't mention anything about that to your W unless she mentions it. Even if she does, I wouldn't say anything about your anger. Don't even let on that it bothered you; just let her know you had a fantastic time regardless. Nothing shakes up a WAS more than realizing that their LBS doesn't need them to feel good anymore...and may have actually had a better time without them.
Great job on not reaching out to your W during your turbulent emotions. Very smart move. I know it was tough, but you did the right thing.
Something closer to NC might be best for the both of you. It lets you live your life instead of hanging onto flimsy hopes every day. I know that you fear that you may lose your W in doing so, but if your W really wants back in, she will learn to pursue persistently after your dynamics have changed enough.
