Final answer:
Roger's fear of staying with the female character is intertwined with the dangers and societal judgments they face if they leave their secluded sanctuary.
Step-by-step explanation:
Roger's decision to stay when he could have escaped is a daring act because he is wrapped up in a complex situation where any choice carries heavy consequences. In the context of the narrative provided, Roger is not just simply choosing to stay with the female character, but he is also facing the fear that stems from his choices and the consequences they bring, be it the possibility of an encounter with riders, rustlers, them being hunted, or the judgment of society should they leave their hiding place.
Given the snippets of the story provided, particularly the mention of fears such as 'the riders', 'the Mormons', and the 'big outside world', it can be inferred that Roger is afraid she may take him to a place where they would face these dangers head-on. This prospective 'safe place' might not be as safe permanently as it is not only the physical dangers but also social perils that worry him.