She is older and is thinking of songs she enjoys. She can also hear herself humming somewhat. Ask a Chiropractors office if their therapist does Ear Candling. This is a process where the excess wax is removed from the war painlessly. It can improve the hearing of many elderly people who cannot hear well anymore. Doctors are not familiar with it because they are not trained in this procedure. It's an ancient art that is very interesting. I've been certified for over 20 years and have seen miraculous things from this. It should only be done by an experienced and trained professional. Its very relaxing.Google it.