I'm going to cut my work friend off without telling her what went wrong with our friendship
What is leading you towards this decision?
She's a poisonous person and she's so dangerous
It is ok to cut off friends if they dont fit into your life, however the right thing would be to tell them why you are doing it. If you just leave without saying anything then they will assume the worst about you. At least they will be able to say that you were honest when they get past the fact of being upset with what you said.
Nah, I like torturing people. It will make me feel better that she is suffering. This seems like a good idea.
I know that dealing with toxic people is bad but you should consider how it will make you look and that at one point in time you were friends. At least you should explain things and give her a chance to fix it.