Final answer:
Alison comes to a realization about the complexity of life and the difficult decisions one must make regarding personal desires and practical considerations, implying that life is fleeting and short.
Step-by-step explanation:
Upon reviewing the provided excerpts, it is clear that Alison (presumed to be Bess in the context) realizes that life is about choices and the duality of desires: the longing for a peaceful life away from the world versus the yearning for societal inclusion and experiences such as beautiful dresses and travel. Through the internal conflict expressed by the characters, one can infer that Alison comes to understand the complexity of life decisions and the difficulty in satisfying all of one's desires. In the context of the provided statements, Alison's realization does not align with the options of the desert being dry and hot, her brother being a rock star, or the existence of time machines. Instead, the complexity of life and the tough decisions that come with it are central to Alison's journey.
When contemplating the wish to "live here always and never think again," the character is faced with the tangible needs of life, like going to Cottonwoods and bringing supplies back. This is juxtaposed with the romantic notion of marrying Bess, only to be followed by the remembrance of her past as Oldring's Masked Rider. Hence, these conflicting emotions and practical considerations lead to the understanding that life is fleeting and short, and filled with tough decisions.