Join Date: Jan 2011
Location: North Dakota, USA
From what you said, her actions don't sound like they are based on fear, excitement, or lacking trust. It does sound like she is irritated.
You might want to have her checked over by a vet when she goes into heat, for soreness or pain. After that, I would put her butt to work when she decides to move when you want her to stand still. I would increase my energy level, like a "Come to Jesus" meeting with her, so she would understand pretty quick that her behavior was unacceptable.
Now if her actions were fear or excitement based, I would remain calm and stay with while she moved getting on, basically desensitizing.
For the bucking, get someone experienced to help or try to ride it out but pull her head to the side.
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