PP - I can see both sides. But in my opinion, she says she misses her friend. Not you. Not her husband. Her friend. If it were me, I would say that I had plans and reschedule later on my own terms (if ever).
That's just me. My W may think about reconciling someday and I may miss it. But I know that pain of getting "sucked back in" and I'm not interested in that.
