All I can say is: If you are Jewish, don't work in a pig slaughter house. Personal belief is "personal", and should not interfere with your work. She is hired to do her job, and not to spread her own personal belief. She got her fame from this silly matter.
Many people have their religions, and only choosing in what their Bible, Koran, Torah... to their own ways. Picking words to attack others that are different, is not acceptable, just look at the Islamic state.
All religions are teaching people to tolerate and love one another. Not hate. I think she deserve the jail.