We're currently in the process of trying to set up an alumni association! My local's only 6 years old but we now have alumna sisters in Korea, The Phillippeans, Ontario, and myself (although not an official alumna yet, just moved away!) as well as sisters still in Nova Scotia that we haven't heard from in eons!
I'm not sure on what we're doing first, but our plans include a monthly meeting for anyone in NS, a website with alumna/active info and a yearly alumna weekend. It's hard but you gotta find someway to stay in touch with your sisters.....I know I do via emails!