Tiffany is described as is tall with blonde hair, blue eyes, dark eyelashes, and high cheekbones. Shannon says that her mother looks more like her.
She used to be quiet, but has now turned into a brat. She doesn't get along with Maria, doesn't do well in school, never does her homework, and her room is a pigsty. Tiffany takes up gardening as a hobby and is raising spinach in her garden. Her teacher has sent notes home about her.
Astrid, a Bernese Mountain dog is the family pet.
- Despite being the same age as Mallory Pike and Jessi Ramsey (who are also 11) she is usually a sitting charge and not a babysitter.
- Sometimes she is written as a ten year old, other times, she is 11.