I don’t think it was the intension of the writters to have Carly be her mom…in the beginning. Many speculated it could be Nicole, because she was married to Trent. But after a while GL got cancelled, and Crystal Chappel became available, so with Max leaving and Melanie’s character taking off somewhat I believe they just went in that direction to give her more SL. And take advantage of the the history this actor had with Bo and the show…oh, and bring on Vivian also….