[Kevin]

There are literally zero things you must do as an alumna. Dues are optional. Involvement with the chapter is optional. At some point you may have a daughter who would really rather be going through recruitment as a legacy. The new member program at your old chapter, unless they are doing illegal things, has no bearing on you. And even if they are doing illegal things, the question you should be asking is whether to report those things to your HQ (you should).