Tanya Barrett (Kristina Nicoll) is a homemaker who is largely oblivious to Betty's adventures, as she spends most of her life fussing over her cat, Purrsy. With a pouffe blonde ponytail and tacky animal-print clothes, Betty's mother dresses like a stereotypical hairdresser, but her actual skills at hairstyling are best left unseen. She usually gets Betty to do things that Betty doesn't like. She tries to discourages Betty's interest in space comics and movies and sports because she thinks Betty is too old and she'll never get a boyfriend, but her attempts failed. She tries to make Betty be more like her which Betty would never want. She is Beatrixo and Jimmy's daughter.
She is not aware of her daughter's secret of being a Galatic Guardian. The reasons are that Betty wants to protect herself and her mother will never understand if she finds out.
Her relationship with her mother, Beatrixo, is misunderstanding due to the fact that she doesn't know much about Beatrixo and her father at all. She thinks Beatrixo is weird because she doesn't know Beatrixo at all. Beatrixo and Jimmy are Galatic Guardian which Betty's mother isn't aware of it. She and her parents have their differences due to the fact they have different interest which she doesn't know about.