Trivia: Kevin James, who plays lead character Doug, and Gary Valentine, who plays his cousin Danny, are in fact real life brothers, with Gary being over 4 yrs older.
Trivia: In many episodes when Doug is hurt, startled, angry etc., he will yell "Yuspa." Cathy Yuspa is one of the two writers on the show.
Trivia: Doug's parent's house is the same one used as Deacon's house.
Answer: Sara hasn't been mentioned in later episodes, and it suggested in later episodes that she never existed, and that Carrie is an only child. Kevin James stated that the producers couldn't think of an good plots to use with Sara, so they left her out.