Without knowing the ages of the children, how long they were in the car or the temperature it's hard to take a side on this. Also, how much time was spent shopping vs being detained? This is absolute shit journalism for not including these facts in the article.
Edit: So the video says this was around 5pm. Considering this was in FL it's safe to assume it was hot as fuck. But we're still missing important facts like if the windows were open, was the car under a tree, etc. Was she stealing food or televisions..?