"Oh god, you didn't kill him did you?!" Peter looked genuinely terrified by that idea. He winced at the idea, but figured that's not what she meant--she didn't seem like a killer. Then again, what seemed like a killer? Because he was pretty sure if he'd met Liz's dad before knowing he was the Vulture, he'd probably not consider him to be a killer either. Also, Captain America was, technically, a killer too. So.
He shook his head to clear it and then watched her go on about Vibranium and grinned, leaning a bit close to whisper, "You sound a bit like Bubba from Forrest Gump... talking about shrimp."
Peter then frowned, "I named her Karen. I hated calling her computer lady, seemed too informal. She was in my head a lot, she needed a name."
Peter was busy looking at what she was pointing out in front of him with the vibranium when she mentioned her brother, "Your brother?! So wait, does that mean you're a Princess? And you build super suits? What the hell? I thought I was accomplished when I won my academic decathlon, and I wasn't even there."