I have recommended someone for alumna initiation and she was initiated in 1999 at Convention. It was a very special initiation becuase it was my mom!
PM me if you would like specifics but here is the quick version...
1) Have the woman attend alumnae events so that women know her.
2) Needs to be sponsored by an alumnae group/collegiate chapter
3) Fill out application and send it in for approval!
That is it!!! I am actually going through the process now with a friend who is interested in being initiated at Chapman this fall.