This is a good topic. This unfortunately has happened in my sorority and it's always a difficult thing to deal with. It's hard to understand what even made them want to pledge in the first place and then (seemingly) all of a sudden, they don't want to have anything to do with the org anymore.
Well basically, what we've done is to try to find out what happened to make them feel this way. The reasons always vary. But the most difficult for me to deal with is when a sister says, "It's not what I thought it was going to be" or "It's not what I expected". I'm always confused as to what that really means. I've seen women come into this organization via other chapters and I've spoken to them about what they expect to gain out of the org. Then, these same women after they are initiated are telling me it's not what they expected!
I just have to say that you can't expect certain things to just
happen! Some things you have to put in a little effort in order to see them happen. It's like that saying, "you only get out what you put in". I don't know who came up w/ this saying, but it's so true when it comes to sorority/fraternity life. You can't expect to make friends if you are hiding out all the time or constantly w/ your best friend 24/7. You can't expect to do a lot of service if you are constantly involved w/ other things, therefore leaving yourself no time to get involved. I don't know if this makes sense at all, but I've dealt w/ women in my org who have disaffiliated b/c of stuff like this. It burns me up every time b/c they were the ones who chose to hang w/ only one other sister or who were missing in action whenever we had service to do or programs to plan. Then they come saying, "it's not what I expected it to be".
So my advice: If you wanna get something out of being Greek, you have to put something into it! And if you've done that and are still not fulfilled, then fine. Maybe it just wasn't for you. But you have to at least TRY!