You have to carry yourself with calm and confidence all the time when in the saddle. If the horse gets you so riled that your anger starts to be a problem the situation will only snowball from there. The horse needs encouragement not unfair and over the top rage. The horse can’t fathom unnecessary roughness no more than a child can. The anger only breaks the horses trust and confidence in their rider and makes them act out even worse. In this particular situation what the horse needed was the rider to calm her emotions and focus on her body control. The rider needed to get her seat bones connected with her saddle so she could drive the horse forward with her leg.