Insane Teacher

Hello A2Cers,

Did anyone/is anyone dealing with an absolutely INSANE teacher their senior year? Luckily I don't know this person in-person as I'm taking AP CSP through an online program called VHS and my teacher is genuinely insane. I submitted the wrong document for an assignment so I promptly reached out asking why I got a zero and she said I submitted the wrong thing. I said "oops sorry about that" and submitted the right one. She hits me with "erm well ackshually I don't take resubmissions" and left it a ZERO. I tried talking to my school librarian (site coordinator) about this and he said he wishes he could do something since this is absolutely insane but at the end of the day it is the teacher's discretion. She's also just been giving me 40s and 50s on assignments without any actual feedback and third quarter (in progress) I have a C in this class. Am I cooked? What's the move? If the time comes where I need to explain this to colleges what do I say?