Report her to whatever office you can. If you have a pass then you're perfectly allowed to do this, and she isn't allowed to tell you no. Don't put up with the s**t and go file a report.
In class, the teacher and the class was being really loud, so I asked the teacher if I could step outside for a bit; (I have this card thing saying I could step outside for 5 mins if I get overwhelmed); The teacher shouted no at me and said 'stop being so pathetic, that's no reason to skip class cos it ToO LoUd'; I broke I to tears and said ' I have permission to do so'; She shouted back 'GO BACK TO YOUR SEAT AND GET TO WORK'; Like, excuse me???