In the first four minutes of The Carrie Diaries, our heroine, Carrie Bradshaw (AnnaSophia Robb), goes through a whirlwind of emotions: confusion, frustration, anger, shock and melancholy. Given that she is a 16-year-old girl this is hardly shocking. The fact that she is determined to find a purse of her recently deceased mother, so that she has "a piece of her" on her first day of school is shocking. Primarily because in season four of the pop culture phenomenon Sex and the City, Carrie mentions an absentee father and gives the impression of a mother still alive and kicking.
Although the show is based on the novel by Candace Bushnell and not the show SATC could be used as an excuse. However, still not an acceptable one. If you are trying to attract an audience to a show by piggy backing on the title character of its predecessor, you better get all the facts straight.