"Why don't I just choke you and leave you lying here?" he hissed.
Her face was only a shadow in darkness, but he could see her cool smirk.
"Because you love me, Asir of Franic."
He dropped his hands and grunted a low curse. She laughed low and took his arm.
"Come on. We'll go get the hüffen," she said.
Why not? he thought. Take her hüffen, and take her too. He could dump her a few miles from the village, then circle back to the vaults. She leaned against him as they moved back toward her father's house, then skirted it and stole back to the field behind the row of dwellings. Phobos hung low in the west, its tiny disk lending only a faint glow to the darkness.
He heard the hüffen's breathing as they approached a hulking shadow in the gloom. Its great wings snaked out slowly as it sensed their approach, and it made a low piping sound. A native Martian species, it bore no resemblance to the beasts that the ancients had brought with them from the sky. Its back was covered with a thin shell like a beetle's, but its belly was porous and soft. It digested food by sitting on it, and absorbing it. The wings were bony—parchment stretched across a fragile frame. It was headless, and lacked a centralized brain, the nervous functions being distributed.
The great creature made no protest as they climbed up the broad flat back and strapped themselves down with the belts that had been threaded through holes cut in the hüffen's thin, tough shell. Its lungs slowly gathered a tremendous breath of air, causing the riders to rise up as the huge air-sacs became distended. The girth of an inflated hüffen was nearly four times as great as when deflated. When the air was gathered, the creature began to shrink again as its muscles tightened, compressing the breath until a faint leakage-hiss came from behind. It waited, wings taut.
The girl tugged at a ring set through the flesh of its flank. There was a blast of sound and a jerk. Nature's experiment in jet propulsion soared ahead and turned into the wind. Its first breath exhausted, it gathered another and blew itself ahead again. The ride was jerky. Each tailward belch was a rough lurch. They let the hüffen choose its own heading as it gained altitude. Then Mara tugged at the wing-straps, and the creature wheeled to soar toward the dark hills in the distance.