Faith,
I agree that you probably shouldn't go while feeling this torn. If the anticipation of an event causes the upset this has, then the event might not be worth it to go? In times like this, the "work-up to it" can be worse than anything.
I can't suggest what you should do, but I wouldn't go. When I was younger, my pride (or listening to friend) would've foolishly pushed past my internal self telling me what I need...causing for addition pain and upset that I didn't need.
good luck and let us know your decision. If your friend has been a friend that long, she'll understand that that's just a place you don't care to "revisit". Reunions should be something we want to revisit and reflect upon, I think.
KD
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