1877: During the initial wave of muggles finding out about magic, Clarissa had been discovered by a muggle walking his dog making it 'snow flowers' in place of snow - her first signs of magic. The man set his dog on attacking her but was thwarted by Clarissas older brother. The incident left the young girl with a subconscious fear of both muggles and dogs.

1878: Unable to cope with living in the neighborhood they had lived in for years due to the bad memories associated with the ostracization, the Cosgroves moved to the settlement of Hogsmeade.

1880: Clarissa is sent to Hogwarts and is sorted into Slytherin, the same house as her two brothers before her. She has a pretty uneventful year, or rather, how uneventful a year can be in a magical school and being away from home for the first time in her life.

1881: Clarissas fear of muggles is lessened as she feels for the family of a murdered muggleborn student as well as sincerely wishing for the safe return of the missing muggleborn students. When it is revealed that the Minister of Magic was behind the crimes, Clarissa loses her respect for most authority figures. Clarissas eldest brother gets married to a foreign upper class woman and decides to live in the other country.

1882: Clarissa meets a fellow Slytherin yearmate when he startled her from a nap. Thinking that he was attacking her, Clarissa moved to defend herself and managed to kick the boy. As if that wasn't bad enough, he had the gall to call her 'small' which resulted in Clarissa declaring him to be her enemy for life.

1883: After a student had flooded the dungeons, Clarissa was assigned to live within the Hufflepuff dorms, where she greatly enjoyed their kind hospitality causing her to have a soft spot for the house of badgers. Clarissa is one of the victims of the Amortentia chaos as she finds herself infatuated with the aforementioned Slytherin despite the fact they had been arguing at the time which turned into the girl complimenting the ears off of the boy after drinking some laced tea. After it wore off, she finds herself still left with the feeling of infatuation despite still thinking that the boy was the most annoying prat she had ever met.

1884: During the summer, Clarissas Hogwarts letter comes with a shiny prefect badge. Clarissa spends time tutoring other students, especially with etiquette. Due to a Peeves prank, Clarissa and her so called enemy for life share their first kiss.

1887: Clarissa graduates and is enrolled into the Pendergast School of Young Roses. She quite enjoys attending the finishing school despite feeling like she doesn't really need it. That summer, Clarissa is trapped in the Wizarding World Market but comes out of it without physical injuries. Later in the year, Albert Pettigrew draws her interest but one cannot snag men while not officially debuted.

1890: On June 12th, Clarissa is debuted into society with a grand coming out ball.