what if co worker abuse everyone and try to show she is not guilty ?

Thanks for writing to us. No individual should have to put up with abuse in the workplace. If your co-worker is effecting your health or ability to work, this could be considered a constructive dismissal and you would be owed severance. I would encourage you to call us and book a consultation with one of our employment lawyers who will collect more information from you and be able to assist you with your workplace situation.