How do I solve this coworker problem?

I'm working pt time through college and there is one woman whose in her 50's or so who never does anything. This morning I was very frustrated because I not only had to do my work but she had left all of hers for me to do as well. She berates everyone for even the smallest slight yet night after night she initials each item on the task list despite clearly not having done it. I left her a note this morning saying that she should at least empty the waste bin and wipe down counters and she called me at home tonight yelling and threatening to leave it in even worse condition for me tomorrow. I know she has issues but I really don't know what to do, I don't want to be the villain at work.