The daughter of two hippies, Topanga began as a strange girl in the same class as Cory, Shawn and Minkus. However, by the time they reached High School, she had become much more of an average teenager. In Season 3, she began dating Cory, a relationship which lasted the rest of the show. Topanga was initially a guest character with a hippie, eccentric personality, concerned about the world and harmony. In the later seasons, she became one of the show's main characters, transforming from a strange girl into an intellectual overachiever. Throughout the series, Topanga has always expressed her love for Cory, as well as for her friends.
Continued dating Cory steadily through high school. They broke up three times, but always reunited.
Her parents moved to Pittsburgh, but she stayed in Philadelphia and moved in with her aunt. Aunt Pru became Topanga's legal guardian.
Although she really stayed to be with Cory, the reason that Alan and Amy gave was that it would be irresponsible to move Topanga before her Senior year of high school began.
Proposed to Cory during Graduation, but they did not wed and agreed to marry later, when they were ready.
"Topanga" is a canyon in California that hippies would frequent. One of the writers got stuck in traffic while driving through there, and decided it was appropriate to the character.[1]