My parents live on the west coast and I haven't seen my mom in about a year (and right now, who knows how long it will be till I see her again?) According to my dad and brother (who lives close to them) she is showing the signs of having alzheimer's with dementia. From phone conversations I've had with her, I can definitely see it too.
My dad thinks she is still ok to drive. My brother disagrees and would like to try to discuss that with my mom when he visits (no they are not "social distancing" but that is a whole other situation...

) Apparently about a month ago (before the stay at home orders took affect) my Dad had an eye doctors appointment and of course couldn't drive himself home, so my mom drove him. It was about a 30 minute drive and included some freeway driving (San Diego, 805 if you're familiar.)
If my mom did continue to drive, and got into an accident and ended up seriously injuring or even killing someone, what kind of legal repercussions could there be? She could go to jail? The family of the victim could sue my parents? Does my Dad hold more liability if he knows she is not fit to be driving and still encouraged her to drive on her own?