Erica

Erica is a character and the main antagonist in The O'Sullivan Twins.

She is first mentioned when Tessie is planning her midnight party, as Tessie believes she would spoil it. Erica steals chocolates from Tessie's desk, so Tessie calls her disgusting, angering Erica. Erica resolves to spoil the party, and gets information out of Gladys the maid. She sneaks to Mam'zelle, who confronts and punishes the girls. Pat O'Sullivan finds out from Gladys that Erica sneaked, so Tessie organises a punishment forbidding her to go to town. Erica decides to pay out Pat for her humiliation, so after Pat angers Margery Fenworthy, Erica spoils Pat's knitting, and Margery is immediately blamed. Erica also ruins Pat's nature kit, and Margery is once again blamed, so Alison O'Sullivan spills the beans about her past. Erica falls ill, and goes to the sickbay, but it catches fire, and Margery saves her. Erica is guilt-stricken and confesses to Lucy Oriell. Lucy and Miss Theobald decide that Erica should leave St Clares and start again somewhere else. No one comes to wave her off, and she is never seen or mentioned again.