Shepard felt a little bit embarrassed that Zeto noticed her curiosity. She didn´t want to make Qurian think that Shepard looked at her as on some kind of freak from funfair. She wanted to apologize for it, but from her experience smearing these things only made them worse. 
Zeto´s answer didn´t really satisfied Shepard. She could now picture something in her head instead of blindly guessing, but it just made things worse. Details were like a good food, more you get, more you wanted.

Her curiosity piqued, she just eat in silence for a while, embarrassed. Then she decided to answer Quarian´s unspoken question.
"Well, we don´t have a seat in council yet, even if our ambassadors do everything they can to get us one. Truth to be told, I am specter just on paper. They gave it to me just so I can fight Saren on similar terms and I am sure Council would gladly take specter status off me, if I made wrong step..." her voice was maybe little bit too spiteful when she spoke.
"Still... it was a hell of a job to become specter, and being human only made things worse. Most of the people still look at us through their fingers. Honestly, I don´t mind them. We are a force of nature, we humans. Always opportunistic often driven by ambitions. When we want something, we are usually going to do everything we can to achieve this. That´s where our strength and weakness lay. Back in old times, before the boom and council and citadel... when we thought we are alone in universe, we considered ourselves to be lords of creation. Now, when we found that we are not alone in here, that there are more sentient species than we can count on one hand, it´s just hard to adapt... I am just afraid we are not ready on each other, we and galaxy..."