dzsaigirl, you moved from Texas to Rhode Island right? Violets touched on it, but for the most part people up here are more insular and might only want contact with alums of their chapter or ones that are nearby. Sometimes it is because, for better or worse, we've gotten compared with these huge chapters that are at total plus and have 4.0's and everyone is a model
. Sometimes when you have chapter consultants that do a "in my chapter we..." it really puts a bad taste in your mouth. Even at my advanced age, when I meet women from certain chapters, I get my guard up, but then they usually turn out to be perfectly normal.
If they haven't had a lot of help from their own chapter alums, let alone women from other chapters, then yes, they might have thought it was weird. Right now in summer, they are probably out of sorority mode too.
Try getting together with other alums that you contact through your national - you might end up not helping the collegiate chapter directly but you can still do things together.