[Poohbah]

One more time: was this woman's action the action a reasonably prudent individual would engage in?

YES or NO.

The only people who find that question difficult to answer are those who aren't reasonably prudent. A case can be made that those individuals shouldn't be allowed to operate a multi-ton vehicle at high speeds.

[bvw]

She is an adult, a free adult capable of making the necessary judgement of an adult. I will not second guess her adult decision. Her car was well controlled while she drove. No injuries, no accidents happened. In my view there is thus no cause for action against her. And there is no cause for presumption about this or that behaviour being dangerous -- for the outcome was her car was driven normally withour any harms.