hi nessa1.. you need to report her to the human resources.. u cannot let her treat u or any other staff in that way..
in my office there was a manager in our training department exactly the same.. the staff in that department were always miserable and lived in fear of her, one girl would be in tears everyday.. and eventually they reported her to HR and they now have a new manager .. and u wont believe the change in the staff.. every1 actually smiles throughout the day.. and they love coming to work.. a boss can be a boss without being hostile and mean..

good luck