Squeak

Abigail was Midge's younger sister, who was given the nickname Squeak. (PROSE: At Childhood's End)

The two resided with their mother in a flat in Perivale. Both Squeak and her brother were friends of Ace, who had known them since they were born, and had babysat them at school when their mother had been working late,

In 1989, after Midge returned to Earth from the Cheetah World, infected with the Cheetah Virus and under 's control, Squeak saw her mother being transported to the Cheetah world and her cat being killed by the "bad cat" the Master brought. The Seventh Doctor and Ace later arrived and found her crying. After learning what had happened, Ace took her to her grandmother's flat upstairs. (TV: Survival)

When she was fifteen, she decieded that she was going to be an actress, and that Abigail 'wasn't showbizzy enough' and told everyone to call her Chantelle. She started out by modelling clothes in Henrik's, and then landed small parts in soaps and a large role in a low-budget horror film. This led to her being noticed by a high-end fashion house, achieving her childhood ambition of being famous. By 2020, she was thirty-seven years old and still working as a model. She went clubbing on weeknights and attracted a lot of young male fans.

Although she was famous, she bought a flat in the same block as her mother and grandmother, and stayed in the same area, which Ace admired. (PROSE: At Childhood's End)

Potential death
According to another source, Squeak died in the early 21st century when her immune system gave out, having been weakened by severe pollution. (PROSE: Cat's Cradle: Warhead)