So you are a billionaire, so you have a car, so you are a female asian driver, so it is dark, so you are in an unfamiliar area, so you have been drinking, so there is a lake nearby. Why didn’t she have a driver and so forth? Maybe she was a friend of obamas’ private chef?
It happened on her property next to the guest house where she entertaining guests...
According to Freeper hecticskeptic in a comment to me on another thread, it's likely the ranch and property she was at, belonged to her husband:
hecticskeptic comment: "Since the taxpayer address for the JWJC ranch is the same Chicago address as Breyer’s office there, I would bet that he is the only owner of the ranch property. That’s speculation but it seems he is certainly wealthy enough to be a sole owner of it."