Hi lybrate-user. First get her full audiological workup done. Pure tone audiometry
, OAE and BERA TEST .these test will report everything about her. With the reports you can contact me .will proceed accordingly. If profound hearing loss
comes in audiological work up with OAE negative and BERA positive. Then only last option is about cochlear implant
. Which is quite a costly surgery
. But she will b able to hear sounds but won't be able to develop speech at this age.