Okay, I went onto the Girl Scouts website and using the Council Finder, found this:
Girl Scouts-Bluebonnet Council, Inc
Waco, Texas 76710-5347
(254) 756-4497
(800) 460-4497 - Local Toll Free Phone
Web Site:
http://www.bluebonnetgsc.org
Maybe through them, you can find out how to get in touch with "Troop 7527" (that's the one that is left with 2 members)
Good luck and tell me if you find out anything!