Well how was she supposed to know he was the "expert?" He was lucky she didn't, because then she would've flipped a switch and turned into the annoying one --asking him all kinds of questions about his knowledge, likely until his tongue grew tired of talking!
"My, you must get so many dates with those fantastic statements that come out of your mouth," she said with a bit of a smirk. The clerk (also a woman), clearly agreed with her.. and she knew by the frustration in the girl's eyes --as well as the rest of the staff-- that they were honestly considering throwing Aaron out. That would've made her morning, but something deep within her was still very much intrigued by the boy.. even if he was an (albeit hilarious) asshole. "Your long life, huh? All of what.. twenty years?"
Her gaze flicked to the arm that draped across her shoulders, and she deftly turned, picked up his sleeve between a pointer finger and a thumb as if it was filled with germs, and let the appendage fall to his side. She shrugged at the girl taking care of their orders as if to say Fine, whatever, just get us out of line. And then he called her Helen. And proceeded to kiss her head. Her fair features twisted with further annoyance, and she moved away from him as she handed over her credit card.
"It's Elena," she stated firmly. "Not Helen. Not Helena. Elena."