A gold '79 Lincoln Lowrider glided on an easy road through Yellowstone. Castiel and Hannah wound around mountains the made the ones out east look like hills. They drove through valleys with slopes that looked ticklish under the breeze. The sun was shining bright, but not so hot. Winter was fast approaching, and the colors were beautiful.
Now that Dean was cured of his demonism, Castiel was able to depart again. His work, at least for now, was done. While Hannah insisted on returning to Heaven immediately, he requested that they make one pit stop first. Since Hannah's sense of direction wasn't the greatest, she didn't seem acutely aware that this pit stop was actually very far out of their way. Suspicious at best, but she made no comment. She trusted his judgement. At least as far as this was concerned.
The two angels made many smaller pit stops within this pit stop. They stopped at various locations to go sightseeing and various conversations passed between them. Some were just shallow comments and others were deep, thought-provoking exchanges. Some places they stopped at were appreciated in pure silence. But oddly enough as Castiel discovered, out of all of the sights that the national park had to offer, the one the Hannah found most profound was the acres upon acres of forest that had been ravaged by wildfires. Years since had allowed the forest to heal itself, sprout new green saplings, but they had decades to go before they'd swallow up the old charred husks of trunks that towered over them.
"...It's beautiful," Hannah told her confused brother as she faced him.
"Yeah... It certainly is," he replied, though he himself was lost on how this scenery was beautiful. Well, he understood the beauty of life regenerating and replenishing itself, but he didn't see much more than that. Hannah was reading much more into this picture in front of them.
"It's like Heaven," she explained, "Our home was destroyed, like this forest. It burned to the ground, devastated the wildlife living in it, but now it's coming back together. The animals are returning–" At that moment a chipmunk scampered over the pavement past her feet, "–and the trees are growing—the forest is rebuilding itself and being restored to what it once was."
Castiel couldn't help comparing himself to the forest fire in this surprising analogy. He kept the glum thought to himself. Hannah was smiling.
"It's just so full of—" The woman's eyes searched the air for the right word, and when she found it, she plucked it from its vine. "-Hope."
Castiel was smiling too. Smiling because Hannah had managed to create for herself a fixation on something that was utterly... human. It wasn't exactly like the metaphorical language that she failed to understand, but it was close enough. He considered this a small victory.
"Looking at it like that," he began, "I can see your inspiration."
"Is that what it is?" his female-embodied companion mused. Castiel looked at her for a long moment.
"...Yes."
She gazed back at him.
The moment fleeted with Hannah's eyes.
"-Let's go," she suggested, and pivoted her steps back to the vehicle. Castiel followed and climbed back into the driver's seat.