

“I want to know how much I have to work” gives off vibes that you generally put in the minimum effort and want to know if you will actually have to try tomorrow.
This appears not to be correct, but that’s just how people see that particular phrase. It offended her that your question appeared to imply that the level of workload affects your willingness to work in that unit. To mitigate what she perceived as your reluctance to do hard work, she called your manager to make sure that she didn’t have to work with you.
Consider the reason behind your question. Would an accurate answer have actually affected your day? Most people don’t have the luxury of knowing what tomorrow will look like. I understand the desire to be prepared and to know what will be thrown at you beforehand, since I’m neurodivergent too, but often these questions are for our own comfort and an answer is not actually necessary.
Why should I know that? It doesn’t seem helpful for everyday life whatsoever except maybe as trivia.