Well, if she's bucking and rearing when you take more hold, either your arms are not supple and forgiving, or she's behind your leg and needs a good kick in the butt. Next time you ride, make sure your elbows are very supple and that you are not locking them. Big time tip, if you are riding with hard eyes (fixed on objects), your elbows are locked whether you know it or not. If she still protests, I find this a good exercise to figure out what percentage is you and what percentage is horsey attitude. Assumed a working walk and use either a bucking strap or your pinkies to ensure your hands stay relatively fixed at her neck. Assuming you reins are the proper length and your hands are on the sides of her neck, when she pulls, she'll only be pulling on herself. If she's quiet, you know it's mostly you who needs to adjust. If she's tossing her head left and right demanding more rein, she's being a dope and needs a good pop with your legs. (no pulling back on reins to correct her. The idea is "I'm giving you nice quiet consistent inviting contact to reach into. You need to do your part now") I'm thinking you'll find a little of each since she really just sounds like she's behind your leg and will most likely protest being asked to work harder. Just don't try this exercise until you have all day to fix it. You can't stop until she's walking around calmly, even if it's just a few good steps. Hope this helps.