Pasture as outdoor arena for working + other problems
I have an interesting problem with my horse, so I'll start with some background info. I am not new to horses, but this is the first one I have kept. I do not own her, she is "mine" in terms of me keeping her fed, having a stable and taken care of otherwisely. So the owner told me she is well-behaved riding horse, and that she has been trained to obey riders' sitting rather than reins or calve pressure (sorry for wrong words, I'm not native english speaker).
She is quite well behaved when grooming etc.. But, when you mount her, she starts sidestepping. When trying to get her to move forward, she will flip her head, start spinning around, even rearing lightly, and backing up. We have checked her teeth, they are okay. Her back and legs are also okay. Though, I noticed first thing that her saddle isn't fitting, so I started to use one lended from my friend that fits. Despite that, she keeps on acting oddly, and I really can't place anything wrong in her - rather than it is in fact a learned bad habit.
She will walk and even trot a little, when a person walks/jogs with her. I have been wondering, if she just wants another horse to go with our riding. When a person escorting us stops, she will stop too and won't move. She lives in a stable on 17 other horses, pastured with 3 other mares, so she is not lonely.
So, should I have different outdoor arena to work with her than this really large pasture I've been trying to work on? She has been pastured in this field before, just not now, so I thought maybe she thinks she is on "free time" rather than work-time? I have been trying to work with her without saddle, without reins, with delicate hand and with a little tougher one, I have tried with calve-pressure (again, wrong word I know) and sitting, and seems like none of them really work. I am getting frustrated and I even began to think that maybe she isn't that trained at all.
She will pull a wagon nicely, though won't run. I am trying to get some edge off of her energy with going on strolls on wagons, hoping it is only excess energy that's talking, but yet I haven't seen any progress.
I would appreciate a LOT if given any advice. (And yes, I've been asking from many friends that are familiar with riding and horses, and we've tried plenty of things. I have also been reading almost all of the horse knowledge books that are in my local library.)
About me, I've been riding on lessons for about 3 years, and many years "just riding" my friends horses with them. I have been going to stables and working there with horses from when I was 7. Now I am 21 :)