Her vehicle looks to be a newer high-end model and I would think it would have a GPS locator on it for theft recovery of something like that. My 2012 Chevy has OnStar and even it can be located using GPS. I would look at that information and see where that leads you. You should be able to trace her movements with that information. And they have traffic cameras all over SoCal. Those too, should be utilized to track her movements.