Cassie is not a character from the Five Nights at Freddy’s (FNAF) series, so there’s no specific event that happened to a character by that name in the FNAF lore. It’s possible you might be referring to a fan-made story or a character from a different game or series.
The Five Nights at Freddy’s series, created by Scott Cawthon, is known for its complex and often cryptic storyline, involving haunted animatronics and the dark history of Freddy Fazbear’s Pizza. The main games and spin-offs reveal the tragic stories of various characters, primarily children, who met their end due to the actions of the series’ antagonists and became the restless spirits haunting the animatronics.
The lore of FNAF is revealed through gameplay, hidden easter eggs, mini-games, and the occasional cutscene. Fans of the series often piece together the story from these fragments, leading to widespread speculation and fan theories. The series has also expanded beyond the games, with official books and a planned movie adaptation further exploring the universe.
If Cassie is a character from a fan-made game, a book, or a theory, her story would not be part of the official FNAF canon. The fan community around FNAF is quite active and has created numerous fan games, stories, and art that expand on the universe in various ways. These fan creations often introduce new characters and plotlines that are not present in the original games. Without more context, it’s difficult to provide a specific answer about Cassie’s fate or role within the FNAF universe.