Maybe she left the red mini-van parked there while she took the Rolls for a a Sunday afternoon spin.
I still have some confusion from earlier reports; is "our" PW the same person who owns a Rolls Royce? Did anyone ever decide who the man is she was having dinner with on Friday night? .... I have further confusion about how anyone could look into cameras & smile when being led in for questioning about a double homicide, but I do not suppose anyone has an reasonable explanation for that.
It is a good question, but to have a reasonable explanation requires one to crawl inside her brain. I think it is all about body language. Some people have no idea of this and what they are communicating. I notice that PWL always holds her head up, while "normal" people usually hang their head. This is what we would expect of her. But she might have been taught as a child to always hold her head up no matter what. That holding her head up expresses confidence. But in this situation, it expresses arrogance, when she should be expressing shame or remorse. I think that on top of all of her other problems she is simply not aware, or simply does not care about what message she is communicating.