How to demand a passing grade from my teacher though I don't attend her class?
That is something of a demand. I think maybe you're asking too much but let's see... It would be easier if you got exemplary grades in your exams and or tests. Exemplary meaning like 1 percentile type of great. If that doesn't do it, bribery? Threats? Appealing to their basal instincts... Good luck to you