I think she is mentioned by Nana.. remember Jess in 5 had said what happened to her parents and that she then went to her grand mother.. I think it's fairly clear that Nana is Jess's Grand ma.. sooo Listen closly at what nana say's a bout her daughters,, and grand daughters... other than what she says about them when you first meet her.. run her as your GFS for a while and have her randomly speak and also give her the talk command.