This is always tough.some girls that go through informal recruitment (here at least) seem to think that its a "package deal" and that if they get a bid their roomie is going to get one too (sisters are guilty of thinking this way too!) sadly, that is not always the case. i recommend that you spend time with her just as you did before you joined your sorority. and if she is still up for being in one, encourage her to go through formal recruitment, or see if she would like to be involved on any other clubs/activities on campus
