She comes to the conclusion that starting a school would be a convenient way to generate some much-needed income, while also looking after her sickly younger sister Joey.
Robin Humphries is also a main character, until she leaves the Chalet school to go to Oxford and later becomes a nun.
Throughout the series, various girls arrive at the school with personal problems, bad attitudes or behavioural issues.
As a result of the ministrations of better-behaved classmates and the school mistresses, they tend to discover the error of their ways and become model pupils.
This list contains all fill ins that have been published that fit within the time-scale of the Chalet School universe written by Elinor Brent-Dyer (i.e. not preceding or following it).
These books follow on after Prefects of the Chalet School A collection of stories that takes place at various points throughout the series: Then it suddenly became unreachable from the web on the same day as the CBB, but some (also totally random) parts of it can be viewed on the Wayback Machine.