She felt like giving him an even harder kick , but her horse stayed stubbornly a few strides behind his no matter how she slapped its sides . " Do n't tell me to shut up ! You know what you said ! " He rolled his shoulders .

Question: What may be the reason the horse was so stubborn ?
Answer: The horse had not yet been properly trained .The horse would only behave when asked nicely .The horse behaves badly when not kicked hard .The horse only likes when babies ride his back .