Palomine, she is nowhere near hot at all. She is quite calm, except when introduced to new things that might eat her but calms rather quickly to my voice. Also, if she has had too much sweet feed, she gets extra bouncy, and I can tell the difference very easily and handle her accordingly.
I am nowhere near afraid of her, nor am I timid with her. I have handled bigger and badder than her and know how to handle a horse. She does not take advantage of me in any way, and when she tries, she is put in her place. She can be testy, as I expect, but otherwise, she is very respectful.
And yes, I do hold her by the side of her halter, and it is only to lead her out of her stall. I am well aware of the dangers in doing so, but I do it because I can, and because I want to get her used to being held in such a way. If there is ever an emergency, and I don't have the chance or the time to grab a lead, it's good - at least in my book - to teach her how to be led with just her halter. If I didn't think I could do it, I wouldn't.