Having experienced an incredible similar situation--my words were twisted, I was written up for everything and nothing, I was given positive feedback from all my preceptors then 5 weeks into work on floor they had a 4 nurses plus me meeting and gave me a half-inch stack of write ups--read them to me. Then while I was weeping from shock and shame (I believed their opinion of me must be right.), the Director of Nursing told me "This is nothing personal, but your hair looks greasy unkempt and unprofessional."
I was told I "had attitude", but never what exactly made them think I had attitude. A preceptor insisted "I will not work with you on this." My questions were never answered. I was given vague advice like "be careful what you sound like" and "you don't see the big picture". Anything I told anyone came back to bite me later. I became physically ill--throwing up, weeping. I believed I was an incapable nurse.
It was an understaffed floor, and allegedly self scheduled. They scheduled me on days I had other plans. My vacation days. My church worship days. Things I had asked off. I wasn't allowed to get off on these days, and when I reported the situation to a higher up nurse, I was confronted by the scheduler herself. "You're trying to make me look bad!" she said. Seriously, all the higher nurses had it in for me and it went all the way to the top.
I was always being escorted to the DON office, and scolded. For having attitude, charting too accurately, not charting enough, and of course having attitude and then for crying in the office.
I stuck it out for a year on that floor. It still messes with my head nine years later. I fight fear and tears whenever a supervisor talks to me in their office.
My advice for you would be to get out of that situation as soon as possible. Confide to no one. Document every single incident in your own notebook. Keep your head down, your mouth shut, get your paycheck and experience and leave that floor as soon as possible. Of course, it's possible that the head nurse isn't part of the corruption. I'd be quiet and watch for before talking to her/him. See if you can figure it out.
I'm glad that you can recognize that you are being bullied. It won't mess with your head so much if you're aware of what's going on. Oh. And don't apologize to her for her alleged perception of you. Unless its along the lines of "I am sorry that you feel/think/believe this way..." That way you're being assertive.