My son suffered hearing loss a few years ago and it turned out to be a very very thin layer of wax right over the ear drum. In fact we had been sent to a Children's Hospital for an MRI. he had had 3-4 hearing tests, and had been to the ENT multiple times over a year's time before they caught it. Get that referral, your family doc isn't qualified to treat this any more, you need a specialist. But if she isn't in any pain, I don't see what waiting a week is going to hurt.
That said, there were other underlying issues with his ear drum, like a semi-permanent pin hole that they didn't want to repair because his allergies caused so much fluid to build up that his body created an effective way to keep it drained. This was after 2 ruptures, and even then his hearing wasn't affected as much as it was with the wax. Now we make sure he takes allergy meds during the season and all of those problems have disappeared.