Why can't I tie a horse and expect them to stay? I can tie any of my horses and they will stand all day. I have tied some of them for several hour while I moved cows or rode other horses and I most certainly expected them to stay tied. It's more like being sat in a classroom and told to stay in the classroom. Horses are not children and they need to be trained to be tied so that they can stay safe.
I whole heartedly agree.
And since they want to do alot with this horse, she needs to learn how to tie, period...and she can, given the right techniques.
She sounds to me that she may have a high fight/flight response, so you may have to also do some desensitization exercises to help her learn to "think" through things rather than react. As kevinshorses also suggested, you may want to teach her how to give to pressure better...I also have found that alot of panicky tyers also don't lead, or give to pressure well. I will teach the horse to give, and lead better, and then teach him how to ground tie; this way when he gets fidgity, you can put him back where you want him, or put him to work, so he gets the idea that standing there is the easier option. From ground tying I will start looping the lead over a fence, but not tying...if he moves about, you will just do what you did when you were ground tying him...put him back where you want him, or move his feet aggressively, and then put him back. I will spend alot of time just doing those things, and eventually the horse winds up being tied without actually realizing he's been tied. Change his mind frame, change the horse's attitude and reactions.
I highly recommend a blocker tie ring for this horse as well, once she is able to tie; If your mare can learn that when she panics, she won't be "cornered" further by the lead, she will eventually settle down, and those panic attacks will come less and less. The ground tie training can take a while depending on the horse, so if you don't feel you have time for that, get the tie ring, and learn how to use it...there are usually videos with them. Use the tie ring everywhere you want to tie, since they are easily moved.