Nobody is telling her that she can not work there because of her religious beliefs. All they are requiring is that she not interfere with legal county business. If a Muslim were to apply for a job as an air traffic controler, but demands that he be allowed to put his position on hold so that he can lay out his prayer rug and pray to Mecca 5 times per day, he would not be hired, either..and rightfully so.
Many Muslims have been able to do so at their jobs.
They have been accommodated by many employers for noon and afternoon prayer.
I believe the question was a little more specific.
So was mine but you ignored it.