Direct physical confrontation was right out. Someone like McGonagall or Flitwick, not to mention Snape or Dumbledore, could have taken her out in seconds in a real wizards" duel, but I was under no illusions as to my chances. Umbridge wasn't a very powerful witch, but I knew she almost certainly knew things I didn't. Also, calling her out for a duel or attacking her would get me expelled from Hogwarts, if not sent to Azkaban. Look what they tried to do to Harry for saving his worthless fat pillock of a cousin's life! One reason I tread very carefully is because I do not want what the wizard world laughingly calls "justice" to take notice of me until I'm far too powerful for it to take me down.