 However, Mildred takes pity on her after finding out that Miss Gribble had always wanted to be a teacher and that she flunked at Miss Pentangle's Academy after turning Miss Pentangle into a tadpole.To make up for it, Mildred and co. stay up all night doing a potions lesson with her and they successfully manage to impress Miss Cackle and Miss Hardbroom, so Miss Gribble finally gets a high chance of becoming a teacher.As a leaving gift, the girls give Miss Gribble a chair from the staff room and her own mug to which Miss Gribble jokingly responds, "My own mug as well.