Exactly what Markie said...they will realize all this once you are gone and they have to work the crappy shifts. I also agree with Judy.....this IS a blessing in disguise. It will give you time to get your resume perfect and find something else. I am glad you applied for unemployement and you are not obligated to let the boss know at all. Quite honestly she should figure as much.
Since you are looking for another position right now....I would ask her for a written recomendation. This way you can see what she is going to say and also she cannot go back on that and say terrible things about you on a reference. (It happens...even if poor references can bring on serious legal issues for the employer).
Also you are going to have to take some time and interview yourself in the mirror. Sounds stupid ...but seriously. You will be surprised how your face will look when you talk about why you left this company and about your boss/coworkers. With practice you can do this professionally without emotion and really per-fect what you are going to say. The reason I bring this up is my years in the HR industry I saw it all the time. Someone had a really bad time at a position and it just DID NOT come out right.You know I got your back sister! If you need help with your resume or interviewing....we can work it out via pm. Heck I will even give you the hard behavioral interview over the phone to help if ya want. Anything I can do to help you.