Ethel Hallow (Felicity Jones) – Ethel is Millie's old nemesis from Cackle's. Upon their first encounter (where they are forced to share a room together) their mutual loathing resurfaces and Ethel claims that Mildred has no right to be in the college.
Ethel Hallow (Felicity Jones) – Ethel is Millie's old adversary from Cackle's. Upon their initial encounter (where they are required to share a room), their longstanding animosity resurfaces, and Ethel declares that Mildred has no place in the college.