twitter says;
Las Vegas sheriff joe Lombardi: The shooter was a local resident name not released, a woman with him was named Mary-Lou Danley, Asian woman 4 foot 11. Looking for a Hyundai Tucson and a Chrysler Pacifica license plate 19D-401.
and
Don’t know for sure if it is same Marilou Danley. But she checked in on facebook at Mandalay on the 19 September.