Definitely looks like Stephen Paddock and Mary Lou Danley standing right next to him.
https://mobile.twitter.com/MSNBC/status/914872770646937600/photo/1
Side by side photos of shooter, years apart. No ‘13’ on neck in older photo.
Just found a link to the Sundance Homeowner’s Association in Cerritos, CA. His wife, Peggy (Reiko Okamoto) Paddock is pictured as the HOA president. This is the only picture of her I’ve found so far.
http://www.sundancehomeowners.com/board.html