There was the briefest, faintest look given to Karolina - one that was streaked with insecurity about the situation - that would be dismissed almost as quickly as it appeared.
"Got it." The quick kiss was returned without a second thought, the action obviously easy and natural. Though the addition of a new voice caused America to turn to look at who it had come from, and an eyebrow raised. Not being familiar with the sayings and child's poems of this dimension it seemed really out of place to just randomly be said but... Well, that was America's life. She'd assume it was either a joke, or just something she didn't get and write it off. Though, the fact that someone was actively saying something like that made the bruiser a bit weary. The eyebrow only raised slightly higher at the obvious closeness of Karolina - most at the kiss on the cheek - with this other girl, but... It lowered after a beat. The obvious scrutiny from this... Nico... Was met with a look of - faintly curious - indifference. If this chick wanted to start shit, America wasn't going to back down (which would be obvious by her lack of shrinking back from the gaze), but she wasn't about to instigate trouble in - potentially - enemy territory as well.
However, the voice of the guy chiming in again, and his offer caused America to blink, her gaze turning towards him as her face screwed up in brief confusion. "Smash... Brothers...?" Was that a drink? A game? Some sort of weird slang that she didn't know what the fuck was up with it...? But then the chick in front of her was talking again and America gave a shrug. She remembered Karolina mentioning that Molly was the youngest.
"Let the kid play." There was no ill intent or scorn in the comment, just a simple statement of differences in age. Overall, America seemed relatively unfazed by most of what had happened thus far - aside from not backing down, and confusion that was - and was willing to continue rolling along with whatever came next.
"I can help." A beat as she turned, and then realized she hadn't a clue where anything was as nothing was obviously visible. Her face screwed up for a moment when she realized the error of her ways.