I think we can all agree that, sometimes it snows... haha
But seriously... there are definitely two ways to look at her post and I see both perspectives...
Bottom line is though, with 1000s of people pulling their hair out on this site, most people don't want to hear about trouble turning down offers. Regardless of how innocent or non assuming she meant it to be. Especially when some people on this site might be on the waitlist for the school(s) she's having trouble turning down! I bet it's harder for them, waiting for an admit. Her compasion is directed at the wrong people. Adcoms wouldn't hesitate to ding you if you weren't good enough, no matter how good of a relationship you made.
It's like the ugly girls in school having to listen to the pretty girl talk about how hard it is to turn down the guys that asked her to prom... or the person who wants to go to college listening to the athlete talk about how hard it is to turn down scholarships he was offered... or the unemployed person listening to the guy with multiple job offeres saying how hard it is to turn down the other offers. Can you see why people don't want to help her? She's in a GREAT spot, complaining about how lucky she is, and complaining about all her hard work has paid off. Having compasion towards the Adcoms (the gatekeepers), when there is some unlucky sapp sitting on the waitlist praying that someone will decline.
Although GMAT club is a place to get support, she was unknowingly being insensitive and uncompassionate to many in the community. Although I do believe she deserves respect and a true answer to her question, b/c she is in fact in a position that isn't always easy.
My advice would be to send a hand written letter or card along with a small gift (chocolates maybe) and just thank them so much for being there for her through this stressful and challenging process. And although she strongly values the friendship and relationship they created, that for her best interest she has chosen to go to a competing school for x, y, and z. I will really miss that I won't be able to be involved in x, y, and z at your school, but I hope that we are able to continue a relationship into the future. I wish you best in the future... blah blah blah... An adcom will respect and understand her decision.