<human>: I had a paper due during the month of March. Despite being sick, I drove to campus and sat through class so I could hand my work in to the TA (the professor didn't show). Three weeks later when papers were handed back, the professor told me in front of the whole class that I never submitted a copy. All 40 or so other students got theirs back with no issue. At the end of class I approached the prof. and her gang of TAs and PLAs only to be told that she has never lost a paper before. The TA backed her up and said she never saw my work. The professor saw that I was angry and told me to email it to her when I got back home.
    
By the time I got home I was seething with anger. I sent her my paper but I also included some lines in the email about how it was ridiculous that only one paper in the whole class was lost and now I was submitting late. I wrote that I would no longer be submitting anything to a TA who obviously cant keep track of simple tasks. The professor graded my submission and sent it back without taking any credit away.

Yesterday (another two weeks after the initial conversation), the professor found my original paper "hidden" somewhere in her office. She made me wait after class and told me it was completely unacceptable and disrespectful to write emails about being mad no matter who was at fault. Basically, she expected that I just be happy she didn't penalize me for her own mistake. She threatened me with a meeting with a Dean if I did not grasp her point at the end of our conversation.

In the end, I picked the Dean over bowing my head and being thankful for the mercy of someone who acted irresponsibly and lost work that they assigned.

When I go to see the Dean I plan on reiterating this point but its really her word against mine as to what constitutes disrespectful conduct.

Should I have just dropped it?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Prof never got paper so I raged at her about her shitty TA losing things. She didn't appreciate my comments so now I have to go talk to the dean. What should I do?