It is good that you recognise there was nothing personal in your coworker's behaviour, that is a sign of strength within you. However, you and your other coworkers don't deserve to be treated like dirt. If you feel you can't put up with it then vent at her, because she is offhand with other people you'll find you'll have a lot of support. I know what it is like to make mistakes under pressure and then make more mistakes because of agonising about the earlier mistakes. Try and get some rest and forget all about the workplace. Remember you only need to work to live and you don't have to live for work.