I've heard that there is no railings and there is a fall hazard. Will it be ok for my 3 year old daughter to go? Can you die from the fall?

I will recommend, to have your child in your arms at all times, and it's more than 5,000 feet down.

You can take her inside the tower to look, from there she will be perfectly safe

Yes, there is no railing and yes she can fall there, be very cautious with small children, is not a play grown..

Yes you can absolutely doe from falling off the Grand Canyon. Just keep a close watch on her and dont let her go best an edge without holding her hand