History Creator / CathyCassidy

* TheLastOfTheseIsNotLikeTheOthers - Cherry Costello, the stepsister in the ''Chocolate Box'' series. All of her stepsisters [[spoiler: and their half-brother]] are blonde and blue-eyed, while Cherry has inherited her Japanese mother's looks and has dark hair and dark eyes.

** Bex's hair goes through a variety of colours, blue.

* Jude in ''Sundae Girl'' was named after a [[Music/TheBeatles Beatles]] song and Creator/JudyGarland.
* Marley and Dylan are nicknamed the Bob Brothers, thanks to being named after Bob Marley and Bob Dylan.

** Greg to the Tanberry sisters is divorced from their mother. Already distant, he leaves for Australia in ''Cherry Crush'' and has little interest in being involved in his daughters' lives.

* NamedAfterSomeoneFamous: Jude in ''Sundae Girl'' was named after a [[Music/TheBeatles Beatles]] song and Creator/JudyGarland.

* WomanScorned: The reason why Shannon develops such an antipathy to Sam Taylor? Simply because he's the one boy in the school who doesn't fall at her feet when she flirts with him.
** Andie from ''Broken Heart Club'' and Jo from ''Indigo Blue'' react this way when their crushes make it clear that they prefer their best friend. However, Jo directly blames Indie instead of her crush, and Andie blames Eden every bit as much as she blames Ryan (possibly more, because she'd been telling Eden how much she liked Ryan as a warning).

* LoveMakesYouEvil: A minor one but Lily in ''Angel Cake'' dislikes Anya because she also has feelings for Dan. When she stops having feelings for him, her relationship with Anya improves greatly. Jo in ''Indigo Blue'' also takes a level in meanness when Shane Taggart, her crush, seems to prefer Indigo to her. Bobbi-Jo in ''Sami's Silver Lining'' also keeps putting down Lexie, seeing her as a rival for Marley's affection (in reality, he's not interested in girls). Many other examples of girls turning on their friends due to their feelings for someone also appear in Cassidy's works.

* ArcSymbol - There's usually one at the end of each chapter of the books, such as a fox for ''Gingersnaps'' and a bunch of cherries for ''Cherry Crush''. But the main one is the mouse face for ''Lucky Star'', and later on, the cat face, symbolising Mouse himself, as well as his relationship with Cat. There is also the question of whether their relationship, like a game of cat and mouse, will end in tears or if it can work.

** Red in ''Scarlett,'' specifically how it represents danger and anger.

* IllGirl: Sasha near the end of ''Sasha's Secret''. She has been worrying about blackout moments throughout the book, but puts it down to stress, and then she suffers from flu in the last few chapters. [[spoiler: She turns out to have epilepsy, and her blackout moments are absence seizures where her mind just shuts down temporarily, but she is eventually diagnosed and the final book implies she is getting treatment]].

* FatBestFriend: Frankie to Anya in ''Angel Cake''. When she first befriends Anya, she notices how much food she has on her lunch tray and that her school jumper would be too big on her dad.