I would personally ask her to not be so loud as your overly sensitive to noise. That should chill her out , you might have to do it numerous times and she starts remembering. I’m guessing she’s been that way for a long time and apparently her boss hasn’t needed to tell her to chill

Talk to your T about it , you both could come up with some good coping skills to help you deal with too much noise, personally I think the entire world is too loud.