While it is true technically that the dust flakes in MRSA can carry the disease, you would have to rub an open sore around in it. C diff would not be contracrtable from scrubs. It is gross tho, tell her to take them off and bag and wash separately if it makes you feel better. We are morticians and we don't wear our shoes in the house, the ones I wore to the hospital to have my son 5 years ago went in the trash. And we always change clothes when we come home, even though we usually wear a gown when moving people. That said our kids come to the mortuary and run around we just wash hands when we are done so just having her around might help desensitize your ocd, but it's always a good idea to practice good hygeine. Good luck to you both!