Hello and welcome...
Alpha Phi does initiate alums and always welcomes new members either collegiate or alum...You simply need to get a "sponsor" who will write you a reccomendation. I helped to start the Alpha Phi chapter at my college and my mom was right beside me the whole way...she, just now, 15 years after my initiation/chartering, will be initiated as an alum. Check your local university for their sororities and then check out their alum groups...You'll have to find the one that is right for you...
I think it is great! Welcome!