She was slightly thrown off by the greeting, but a small smile came across her face as he did. He was much, much older than she was, obviously. Old customs, she couldn't help but be slightly fascinated. "Actually it's-" but she was cut off by the appearance of her husband.
The possessiveness wasn't the least bit surprising, though the slight aggressiveness was. Usually Edward was much more calm about these things, unless sensing immediate dangers. She was hardly as fragile as she had once been. It made her wonder if he was picking up on something from Aubrey that was less than friendly. Though he seemed...'harmless' enough. Her puzzled look went from Edward to Aubrey, wondering what it was all about.
Finally she just shrugged it off, she'd ask him later what that was about, and nodded at Aubrey. "Mrs. Cullen. Right, but just Bella is fine." she said as her hand automatically went to Edward's, not even realizing she was even doing that, it was just more of a natural reaction. "Nice to meet you, Aubrey."