A.L.
Hi K.,
I haven't experienced this, but I just wanted to reply and tell you that after I read your story, I am just amazed as to the way you reacted, making fast and sound desicions in such critical moments, I really congratulate you and also I hope that your little daughter is feeling so much better. It must have been so stressful to say the list! and you were very brave. I don't know what else could be done to keep a sick child awake if you are driving, specially on the highway, other than to open the windows and make loud noises.
As far as your other question, like I say, I don't speak by experience, but I would definately make an appointment with a neurologyst, she/he may be able to guide you better also, in what to do if, God forbides, this incident happens again.
I wish you the best!
A.