I have a few friends who are members of DPhiE at UF. When I visited the UF campus, they took me on a tour of their house. I met a lot of girls and many of their sisters are not Jewish. I think that DPhiE has really been pushing in recent years to get rid of the image of being the 'Jewish sorority'. I know of many girls that went to my high school who are Catholic and are UF DPhiE's. So, it's up to you whether you feel comfortable there or not. Good luck with the rest of rush!