Earlier Sunday TNT replayed a 1995 episode of 'Law & Order' called "Bad Faith". It was directed by Dann Florek after he left the series in 1993 (where he played Captain Donald Cragen), but before he was connected to 'Law & Order: SVU'.
In this episode, his character of Captain Cragen mentions his fourteen year old daughter. However, it was previously mentioned in the series that Cragen and his wife (Marge) had no children.
But that was back when Florek was still in the show. It could be that this fourteen year old daughter was a late adoption, taken in by the Cragens when she was just beginning her teen years.
We can't see everything that happens in Toobworld.....