Exuberance and Dominance

I played with Belle today and it definitely was an interesting session. I had my grandma come out with me with the Puzzles booklet and pick out puzzles for me to do.
We did:
Porcupine, Zone 3, Hula Hoop: rather easy, just porcupined her front legs inside the hula hoop
Sideways, Zone 4, Log: I just had her sideways with her butt next to a pole. It wasn't too bad.

Then I started to do some figure 8 with barrels. Belle decided she did NOT want to send to the right. Absolutely was not going to. and when Belle doesn't want to, she throws a fit. She reared more than 10 times during this session. I ignored it and just kept asking her to circle to the right. She also coupled this rearing with pawing and general Belle-spaz-ness. As soon as she went right, i released.

By the end I got some good circles with her going over the barrels, and mostly staying on the circle, which is hard for her, because she thinks that after she jumps she has to face me because of playing the squeeze game so much. Even got some OK circles to the right with the jump.
So back to my title:
Exuberance- Belle is the horse who loves to destroy things, loves to run around and be showy, does 'star jumps all the time, and is generally just rather exuberant. Belle loves life.
Dominance- Coupled with this exuberance is slight dominance. She throws her ears back A LOT when doing change of directions and other little things, so I "wipe the look off her face" with a phase 4. When I do this, she definitly puts her ears forward, but being so sensitive, she hugely overreacts to it.

I know Belle gets better the more I play with her, and I have to keep reminding myself that I haven't been playing with her consistently at all lately. I really like this horse, she's gorgeous, smart, charismatic, good conformation, all of that.. but I definitly have a fear of being on her back that I need to overcome. and thats really hard when she's still super green. But I think I can do it.