To get rid of Adrianna, Muriel revealed to the townspeople that Adrianna was a witch, the townspeople burned her alive and hanged Hansel and Gretel's father.
Adrianna was a witch. This was what Muriel revealed to the townspeople. This was to get rid of Adrianna. The townspeople burned. Her alive and hanged Hansel were a witch. Gretel's father were a witch.