She blushed too. "Nothing like that," she said quickly, although her mind HAD wandered in that direction. "I just wasn't sure what YOU were thinking, is all," she added.
Way to make Ron sound like a pervert, Hermione.
"I totally trust you, with my life, and you know that. I didn't mean to imply that you wanted to do anything ... improper. And if anyone can figure out how to outmaneuver those stairs, it would be you two."
She laid her face against his shoulder, hiding her blush.