That says it all, C'sW.
Her mother has been on with Greta every night (that I have seen that show.) She does not have an ease with the camera, and is a difficult person to interview. There has been no father or other relative on TV to add any background or support for this girl. I saw a LEO say that after she had been missing for TEN days they could treat it as a suspicious disappearance. I guess it was after that interval that the search for the car really ramped up.