Golden makes a good point:
"Riding in two point because she is frisky, I understand but you are making yourself venerable by being forward, get your butt down, if she is that frisky don't canter her, go back to walk and trot, plenty of transitions and turns before going back to cantering."
If the hrose needs to warm up and get some ya=yas' out of her system, a big, loose trot would be better.
there's something about a canter that can key a horse up. I have heard it said that the canter and gallop are the gaits a horse uses to flee danger, whereas a trot is just for cruising across countryside, so, when they begin cantering, it's easier for them to leave their thinking brain, and go into the automatic "Run!" side . so, until she is a bit softer, lowering her head, blowing out and trotting rhythmically, a canter is likely to trigger that kind of reaction, which makes the rider tense up, clamp down with knees, and the beat goes on. . . . .
Also, two point is an "allowing" position. if you want to allow her to move out that's great, but if you are asking her to come back and match herself to your seat, you would do better to sit down.