This is just so patently absurd. The legal issue seems to revolve around "rendering the child in need of services". A child alone in a car for 5 minutes on a mild day is not in need of services. The case should be thrown out right there.
A large portion of people most likely would not have been able to round up the resources she did nor have the support and get screwed by this type of stuff.
It's good that she's bringing the subject to light but, being a seemingly local law, and one that you might not know about until it's being thrown at you, it seems more likely it will continue to harm parents just getting by.