Does Infection In Ear During Childhood Cause Poor Hearing Later?

hello doctor, when my sister was aged about 5 yrs.she push a matche s stick in her right ear.few day later we watch that she is suuffering pain due to pus the sore place . we admitted her for treatment. return from hospital one of neighbour suggest my parents to give a drop of medicine, later know that this was highly powerful alcohalic spirit. she is now 26 years totaly loses hearing and speaking power from childhood. now need ur suggestion. p. das . assam