WTBH
That is a lot to deal with in a short time space. You dealt so well with the meeting with the superintendent and it got a result - ok you heard the result very late having already been given bad news - but your proactive and professional approach to the problem has been rewarded. Don't let her make you crazy, then she wins. She is clearly not good at her job and clearly does not have the students best interest in mind through her actions. You are good at what you do and you do have the students best interest at the heart of your actions. Don't let her take up so much space in your head she doesn't deserve it. It is highly unlikely the superintendent will renew you to work under her again now that the situation has been revealed for what it is? I would think you will be moved, would you say? Let her be the one to worry and stew about this and try to not let her take up any more of your thoughts and time, easier said than done I know but you can choose to not obsess about her.
Good luck with it all.