Here is a link to the Sigma Kappa European Alumnae Chapter.
http://sigmakappaeurope.home.netcom.com/
Perhaps you can contact one of the Sigma Kappa alumnae for more information.
FYI: For those of y'all who would like to know why I know about this group; my sister-in-law is a Sigma Kappa and told me about it. For some reason, it just now popped into my head.