How To Deal With A Difficult Boss?

Ive been in scholars for 3 months now. I did the month on relationships and did my boss one week, and I seemed to get passed it and we were getting along fine, and now we seem to be right back in the tit for tat pattern. I try not to react, but I have trepadation each time I go to work and know I’m going to see her. I see her getting along with others and flaunting it in my face. She’s not going to change, and I thought I could handle it. I love the job and don’t want to leave, but I’d also like to tell her to go to hell. All my other relationship work is working beautifully. Why can’t my relationship with her at work. It eats away at me. Help. Thank you, Jody