Answer:
To follow the standing plans yourself
Step-by-step explanation:
The reason for this answer is that if Maryann could have pointed out that everyone including you, which you is probably her boss could not follow through with defined disciplinary strategy laid out by the firm to its employees. Even if you have the most well-defined disciplinary strategy it will not be of much use if it lack teeth.
Once rules are laid out the expectations and defined consequences for an employee found guilty of rule violation, relevant actions needs to be taken as per the strategy.