One of my close friends is an alum of the local at your school. My understanding is that the local was once a chapter of Delta Gamma and that other national sororities have also had chapters at your university. This link provides more information:
http://www.beloit.edu/~libhome/Archi...oit/greek.html
This link also shows that there was at one time a Kappa Alpha Theta chapter established on your campus. Based on my limited knowledge of your campus and after looking at the history of your greek community, expansion probably isn't the best move at this point.
Lori