I didn't cause my ferret to go deaf did I????! Help!?

My ferret hasn't shown signs of going deaf in the past year we've had her. She is a DEW ferret. 5 or 6 and has adrenal disease fleas and jumpy syndrome. All which will be treated VERY soon so dont say anything Just the other day I realized their ears were dirty, possibly ear mites but most likely prob not. I cleaned their ears with marshals eat cleaner and q tips. They r ferret so they hated it. I did it again 2 days later to make sure everything was out and clean. But the past 2 days Fiona has been ignoring me so I tried the coin in a can method a few times on joe and fi. Joe responded and fi didn't. I have no idea if fi is deaf now or if she has been since we had her, I'm not one of those people that will get rid of her now, I think it's kind of cute. But it's breaking my heart thinking I did it. I know about W. Syndrome and how it effects DEW. But joe is blaze and can hear and 75 percent of blazes are deaf. Did I make her go deaf if she is?? Please help! I am so sad/scared!!!