She used to, though. That is, her hearing aids did.
Every time she had to wear hats, or if someone put a hand to her ear, or sometimes even if she yawned too vigorously: the microphone in her hearing aids that sampled her world and sent that sound to her ear would feed back, causing an audible “squeak”.
But she hasn’t worn a hearing aid in many months. And while her CI does have a microphone, it isn’t amplifying any sound externally, so…
She might be getting some really nice ear muffs for Christmas.