You could try doing games with her, like bending barrels or putting the tennis ball in the bucket, lol cant remember hhe proper name :roll: you dont have to be raceing just go at walk and trot to start.
How old is she?
In some ways it sounds like shes running because of fear of somthing. Because it sounds like she gets herself into a panic and is trying to escape.
Like shes trying to be brave then its getting to much. Shes using the natural instinct of flight, out of the flight or fight response that horses have.
I think staying on the ground with her and building up a very solid relationship that way first would be a good start.Then once you hop back on , start at walk and do some bonding and trust exercises, things like walking over scary objects like puddles or bags.
She needs to learnt that when you are with her everything will be ok and she doesnt need to panic and bolt off. The fact she doesnt listen possibly suggest she just wants to get out of there and doesnt care or forgets about you at that moment.
I have had one of my horses bolt on me and no matter what i did he wouldnt stop. He went off down a beach , runing/jumping little logs in a panic and was litterally cm from crashing into my cousin and her horse, they had to do a little rear turn thing to get out of the way.
So yea this bolting behaviour is a dangerous thing for you. My horse never did it again so i was some what lucky that was the only time. My horse did it through fear as he used to be quite nurvous and shy ALOT. So i was able to deal with it accordingly.
Its a little harder since we cant actually see whats happening with you and your horse. But hopefully we can help