DEAR Ms. NEHA
you have not mentioned the kind of cardiomyopathy
she has. Description of your problem seems to relate more to a naso-pharyngeal (nose and throat) cause rather than a cardiac cause. it may be only a blocked eustachian tube
due to inflammation of throat/nose, but it will be most prudent to consult and get her examined by general physician or ear nose throat (ENT) specialist to ascertain the cause. you can always revert back to me for any clarification about her cardiomyopathy part with more detail.
thanks for writing to us.