Claudia Bruderbakker was Charles Bruderbakker's daughter.
When she was ten, her parents separated. He almost immediately married Joan Bruderbakker, whom Claudia thought of as "the younger model". Claudia despised her stepmother, and she considered her evil and superficial.
She made friends with Peri after she and the Sixth Doctor's arrival on Reef Station One. After the Nestene Consciousness was defeated, she invited Peri to stay. The offer was turned down, though, and Peri continued travelling with the Doctor. (PROSE: Synthespians™)