i'd see if you or shareholders would go after her for self dealing and theft of the co-op monies for the repairs. As a shareholder i would, and i am. Dont steal my money or screw over my neighbors for your own quid pro quo. The rest of the board didn't do their due diligence and fiduciary responsibility to the building by letting her use the super for her personal contracting. The bod sounds very liable here . There should be a work log from the super.
Boards have to realize they have to perform due diligence and are liable to the shareholders/And they are not indemnified for self dealing, shareholders have to act like owners, we need a template on what to do with these boards to bring them to court, like a small claims court , without a lawyer.