Thank you for all the kind words and suggestions.
I'm undecided as to whether to contact nationals. When a chapter is in this situation, from what I've seen, nationals (I'm talking generally, not specifically about AEPhi) either steps in and tries to save the chapter, or shuts it down. I hope AEPhi would fight to keep a chapter open at my alma mater, but you can never tell. I would hate it if I put them on to the fact that my chapter is hurting and then find out they gave it up as a lost cause.
I like the idea of "borrowing" some fraternity rush techniques. I think that could lead my chapter to some great new members.
AEPhi did have a fall informal rush... but so did the other 4 sororities. I guess my chapter just couldn't compete.
On the Jewish tradition, yes we have Hillel. I remember that when I was an active (especially around rush), sisters would try to sit together at Hillel's Friday night dinners and wear their badges, but I have no idea if that still goes on.
On housing, 3 out of 5 sororities have houses. Alpha Phi has a huge (68 +/- beds) house, and (as APhigal pointed out) has to stay at total to keep it full, especially since freshmen must now live on campus. AXO and Sigma Kappa have smaller houses (~25-28 beds). Theta has a wing in a graduate dorm. AEPhi is unhoused. Actually, I think being totally unhoused is hurting AEPhi too.
You've made some great suggestions; I'm going to pass them along. Thanks again!
oh, I cleaned out my PM box