My experience in business shows companies don't tend to get rid of people just because others don't like dealing with them or believe they're wrong for the job.
Outside of regular layoffs, they tend to only get rid of employees that either lose the company money
or are a legal liability or too big of an expense to them in some way.
My guess is she'd somehow have to no longer be able to get her shops scheduled...before anything would happen.
I've dealt with a number of schedulers over the years...she must be successful or a longtimer because I notice she seems to be in charge of shops that shoppers have a preference for.
Doesn't take too much work in that case.
When we give up the need to be special, life becomes special.