Her Facebook shows that she has worked for Camden Capital Partners in Beverly Hills since December 2016.
After looking at a map of LA, the apartment complex where the dog was found is in Downtown LA, near the Staples Center. It's a safe enough area normally but crime is up in the big cities of CA.
Her employment in Beverly Hills is a few miles west of the apartment complex (Staples Center area) and Downey is a few miles east of Staples Center. Her own home based on news reports appears to be in midtown, kind of in the middle of all of the other places she frequents. Unless stolen, I would think that her vehicle is somewhere in that area.
I do think it's kind of strange that her employment hasn't been mentioned in any news reports. Was she in the office regularly? Did she work from home? Didn't they find it strange that she hadn't been in communication with them or shown up for work?
And since she took her laptop with her to the ballpark, perhaps she was trying to work there while watching her son play, which makes me wonder if the reason she left was work related.