Difficult team lead

My team lead is one of the most toxic people I have encountered. She loses no opportunity to throw people under the bus (including her own teammates) in order to make herself looks good. Recently, she has been doing this a lot to me, via email, looping in our head of the department. These are tiny, minuscule things which can be rectified if she just picks up the phone and call me. She tends to blow things out of proportion and it is getting very difficult to work with her. The thing is that our department head now has a very bad opinion of me. I wake up every day anxious and dreading what she will be up to today. Confrontations with her do not go well because she turns it around and makes herself the victim, and digressing from the matter at hand. She constantly gaslights me. I cannot leave this job now because of the current job environment and that I am only eight months in to this job. What do I do?