New horsee! :D tips for bringing her on the bit?

Put a running martingale one her when you ride, and lunge her in a cavesson and side reins. Tie her up outside so she can see everything and turn her out in the arena where she works (if possible) SOunds like she just needs to get used to things. You don't have to leave the martingale on forever and keep on tying her down, just for now till she stops this sillyness :)