No, her "sex organs" will not change in appearance ... but there are other things that are more important to wonder about. As others have mentioned here, adrenal crisis is a very real possibility, so you should know how to deal with that, including how to give a shot in case you are the only one with her that can do it (she should too, for that matter, and missing her meds for 3 days is a definate "no-no"). I know it’s hard to let yourselves be vulnerable sometimes, but if you care about each other enough to move in together, maybe you should discuss this together?! Ask her again about her condition, how it affects her and things she thinks you should know; when she realizes that you’re asking because you care about her (and not just because you’re curious about how she’s "different"), hopefully she’ll allow herself to be open with you. You have to trust each other in a real relationship.