It's a Frogs Life (S02E03)

Ethel thinks it's Mildred's fault that Sybil is always following her around, so when things go too far during a lesson of broomstick flying, Ethel vows to get her back, by turning her into a frog! With the help of a wizard who has also been turned into a frog, Mildred just might turn back & figure out who did this to her! (Prime Video)