It was incredibly irresponsible to go around the barrier.
Hardly anyone goes out in torrential downpour to put up a road block just for fun - it was there for a very good reason.
She placed her children in a dangerous situation. That's child endangerment.
She may have suffered enough. Maybe not. We don't know her. We can only imagine how we each would personally feel. And I'm thinking most of us would not circumvent a barrier with our 3 most valuable possessions and charges in our cars.
Without knowing more details I would absolutely want to see charges pressed. Seems clear that the death was directly connected to her carelessness (going around the barrier). I think I would tend to charge her for the death (manslaughter), put her on probation (for xx years), and receive counselling including parenting classes.
There are too many people not taking their parenting responsibilities seriously. True, accidents will happen. But that baby would not be dead if the mother had respected the signs, turned around, and gone somewhere safer.
(Now I'll go back and read the rest of this thread...)
-Aude.