Keep the email, print it out and frame it! If/when you get your group going, hang it so ALL can see it!
If from your other posts, I think I know who this Soroity is, it is a sad statement for not the Soroity but this person who is in it!
To funny, but that is the reason all new locals are started, to try to do something a little different than what is available!
Just work your butt off and prove her wrong!