Add a scene to Order of the Phoenix and show Umbridge in a positive role.
Draco Malfoy limped to Professor Umbridge's office. His leg had been hit by a curse thrown at him by some stupid Gryffindor. He had been close to Umbridge's office so he decided to ask for her help getting to the Hospital Wing and getting revenge. He knocked on the door and heard Umbridge squeak, "Come in," from inside her office. Draco entered her office slowly because of his leg.
"Professor, can you help me please?" Draco said, sounding not at all like himself.
"What is it dear?" Umbridge asked.
"Some stupid Gryffindor cursed me, and now I can't walk," Draco replied.
Umbridge tisked and called for another student to help the young man in front of her. She sat down at her desk and wrote a note on a piece of parchment, there would, with no doubt, be another rule coming from this situation. Then Umbridge got up and walked to Draco. "Come with me dear, I'll make sure you are taken care of," Umbridge cooed. Umbridge lead Draco out of her office and down the corridors where they were joined by another Slytherin student, Crabbe. Crabbe helped Draco walk on the way to the Hospital Wing. The whole time Umbridge stayed with them and when they reached their destination she told Madam Pomphrey what happened. After that she returned to her office and finished the new rule she had before announcing it.