Have you other support in the building? Even if not, you could do this as an owner , i.e. enquire about mediation and National Civil and Administrative Tribunal (NCAT) which exists to help people in your situation. It’s very good and would keep you out of the public limelight if that is what you would prefer. Don’t feel concerned about the preparation side of the application, as I understand it’s not too complicated. You need only proper paperwork and meetings records to back up what you are saying.
Good luck.