D.B.
Hey Steph. The hearing issue is common in babies that were born via C-section. As long as she passed by the state's standards, then I would wait it out.
Ask your pediatrician LOTS of questions about the procedure and if they feel it is really necessary at this stage of the game. Maybe also consider getting a 2nd opinion from a different audiologist when she is a bit older.
In the meantime, try to observe if she is responding to noise or auditory stimuli on her left side, for example, hand clapping or calling out to her.
Best of luck!