"I promise I will get plenty of sleep," she said. A few hours was plenty, after all. She just had one scene she wanted to finish and would have to get her things ready to go and give Roberto some directions for while she was gone so everyone wasn't dead or in jail by the time she got back.
And she had a couple of personal things to take care of as well. Besides, she had been horseback riding before, spending a day doing it couldn't be that taxing.