As soon as she felt her brother squeezed her hand in return, Sonya had the feeling of giving a hug, in return to the reassurance that Sonic was able to return. Passively, she closed her eyes, internally happy to feel his acknowledgement. When Knuckles spoke again, she had her green eyes open again, and glanced at the red Echidna. "I am the eldest, yes", she confirmed when her eyes slowly narrowed, examining the mobian before her and Sonic. "Enough about us, Knuckles. Where did you come from? How did you end up in a lab?", the question had suspicion and caution mixed in it. For her younger brother's sake, Sonya needed to know more about the newcomer, in order for their survival to be a hundred-percent accurate.