I can have some sympathy for her. If she had a medical incident over which she had no control and no prior experience, what happened to her is awful too, and must be very difficult to live with. TBH it would be difficult to live with even if she made poor decisions which make her culpable. I can understand why she'd want to stay out of the public eye and why, as she has the means, she might pay people to help that happen.
I think there are a few questions, mostly for the police. There is obviously "something" off about the original investigation, although I suspect that will be much more about the police conduct than any great cover up. I do think having friends in the right places helps enormously in all aspects of life, so it's entirely possible that being well connected has helped her, but probably by knowing the system and process more than actually avoiding prosecution.
I think the Dubai doctor is likely to be a red herring. After something like that happened, if you were wealthy, you'd probably take yourself off somewhere and see a doctor there, if necessary.
I think the fact that she seems to be driving again makes her seem unsympathetic, but her life goes on too, and she's probably been advised to "get back on the horse" if the medical condition is now considered managed. I imagine most of us would find that very hard to do, but that doesn't mean we wouldn't find a way to do it, if the alternative affected our own DC's lives.