Aunt Dahlia

Aunt Dahlia is the main antagonist of the short story An Old Story from Still More Tales to Give You Goosebumps and it's television adaption of the same name. She is a witch that pretends to be related to children so she can turn them elderly with enchanted prunes so she could sell them as spouses to her elderly friends. In the television adaption, she is the blood-related aunt of the two main protagonists.