"I already am helping you. You know as well as I do that the ministry hides much of what it really does from the wizard pubic to avoid outrage and a dmand for reform. Otherwise, the newpapers would be honest and would not need ministry control and sanction. Regardless of what your plans are, the ministry does need the wizarding public to believe that Hogwarts is not just surviving but that it is thriving under your tenure. That cannot happen without happy students. And you know I get on with the students. They trust me. As long as I am here, they will believe Hogwarts is the same safe, wonderful utopia it has always been. If I leave, for any reason, the stuents will wonder. You do, I'm quite sure, recall, how quickly they came to my rescue when I left the hospital wing. You need positive influences like me to keep up the image Hogwarts has.
"Furthermore, if you were to have an adversary, better that you have one like me who is willing to lay her cards on the table than to have one who is more insidious. You get more help from me than you give me credit for."