Dorothea Ames
From Tardis Wiki, the free Doctor Who reference
Dorothea Ames became Headmistress at Coal Hill Academy in 2016, replacing the deceased Francis Armitage.
Ames suggested that she worked with the mysterious Governors. When Miss Quill entered her office, she asked for her help with the invasion of killer petals. In return, she offered to removed the arn, giving Quill her free will back. (TV: Co-Owner of a Lonely Heart)