Ben caught the small attempt at a smile and instantly felt like an ass for questioning her like that. Tact, Benjamin, tact, he told himself silently, holding back a grimace at her answer. It must be hard for her, not having her siblings around. He was an only child himself and thus really couldn't fully relate to such a thing, but there were still moments when he actually found himself missing Gwen, not to mention Grandpa Max. He'd learned so much from his grandfather and understood that it was due time he learned to manage his burden on his own, but he still...yearned for the kind of companionship he'd had during the first year he'd had the Omnitrix from time to time.
"Yes, Lowie! I remember now. He was on the cover all..." Ben proceeded to pose as if he were wielding a lightsaber, screwing his face up ridiculously as he attempted and failed at making a Wookiee noise. He relaxed out of it after a few seconds, giving an embarrassed sort of laugh and rubbing the back of his head awkwardly.
At her question, he looked down at his wrist. "I found it. It sort of, fell from the sky. I was ten-years-old, on a camping trip with my grandfather and cousin. I wandered into the forest, saw what I thought was a shooting star, and ended up coming upon the Omnitrix. Only, I didn't know what it was at first. All I knew is that when I got near it, it stuck itself to me. It hasn't come off since."