english teacher gave me a 0

my teacher returned our grades for a supported opinion paragraph and she gave me a 0 and wrote ai detected. i scanned it on multiple websites and they all came back as human. when i went to talk to her about it she asked me to read out what i wrote to see if i could pronounce the words i was using? i read all of it perfectly and she goes on to ask me to define the words i used (ubiquitous, ineffable) i gave her the definitions and then she asked me to explain what my writing was about and i explained my opinion and point. then she checks over the edit history of the doc and sees all my thought process etc and then just tells me “ok i’ll check again”.

wtf? i don’t think she even detected ai she just thinks i was too stupid to write well? for context she came after midterms and this is the first writing task we got back from her. my midterm for english was a 90 and now i’m really scared of what she’s going to give me. what should i do?