If she’s your favorite I wouldn’t get rid of her - only because she has now taught the rest of the hens that the dominant hen is loud. You’re more likely now to have the next leader also be loud if she’s gone. So, you will have gotten rid of your favorite just to have the next in line be as loud as she is. Sometimes they’re just loud your neighbors will have to get used to it. Hens aren’t as ear piecing as roosters, but they are not quiet.