Is it okay if you feel bullied and harassed by an employee and management continues to tell you to go back into that environment?

I am an assistant to a teacher that continues to speak to me as though I was one of the children, following me around the room or outside the classroom. Stating things such as be quit, do you hear me talking to you, you need to acknowledge that you understand me, while leaving the children unattended. Now blaming me that she have to work harder because I reported her, being mean to staff and children because she's upset, and making my job unbearable. I have followed the chain of command, but still being requested to go back to that classroom. Where I know that I can only take so much. I am ready to resign. Every time she harasses me I walk out the room to let staff know, or just leave. I am losing a lot of money , and leaving the children that I love to take care of.