Poor little girl. When I was a kid there was no cooling or moisture removal available for cars. Heating did exist, of course. When our family went on a trip by car in the summer we'd want the windows to be opened but because my dad was prone to get neck pain from the draft he wouldn't allow them to be opened very much. I became accustomed to hot cars. :D
Now that I drive a car of my own, I do use the AC whenever I feel like it and that's quite often.
I was looking in the mirror and was genuinely worried about her, we pulled into a service station and got her more water and fresh air. I don't want that to happen ever again.
This is me too
Try bringing a spray bottle full of ice-cold water to the car next time. Put ice into the water to keep it cold longer.