|First appearance||Diary of a Wimpy Kid (online)|
|Last appearance||Diary of a Wimpy Kid: Hard Luck|
|“||Somebody take this kid to a speech therapist!||”|
|— Aunt Cakey talking about Manny|
In the online book, she appears on November 14 and 25 as cameos, and from then on, has only been mentioned by Greg.
She appears to hate kids and whenever Rodrick or Greg would get bored, she would make them do household work. According to Hard Luck, she had never married anyone and she is Susan Heffley's oldest sister. She had a dog named Rudy in the online version. In Hard Luck, the last time she babysat Greg, she made him sit down on the couch for a long time and then made him take a nap, although Greg doesn't do that anymore, even then. However, when she tells him to not touch the iron, Greg did so. Greg ended up getting a second-degree burn from the clothes iron. Ever since, Susan has never let Aunt Cakey babysit Greg ever again.
- She has an earring, she wears a tight black shirt and a dress, and she have a bun. (It is unknown what color her clothing is due to the book's black and white nature.) In the online book, she has a rounder face and wears slippers or sandals. She also has no wrinkles.