One other thing, why is this such a big deal anyway? This is a character that used observation skills to make a judgment call that she believes is true. She didn't pull this out of her ass, and I will prove it. 

I only look at character's appearances because I want Quinn to be as organic as possible. This means that EVERY character will see and hear these things in their interactions with these characters. So, this is basically what she saw and heard: 

-hairless face (feminine)
-face (masculine)
-body shape (masculine)
-voice (masculine)
-jaw and chin (masculine)
-lips (masculine)
-nose (more masculine than feminine)
-ears (feminine)
-cheeks (pretty feminine)

That is not including the lack of breasts or the butt, neither of which Quinn has actually looked at. 

Now, these are ripped straight out of the appearance section of the character sheet. The appearance section is not subject to metagaming since these things are what we are SUPPOSED to know IC. These are things that our characters are supposed to see and react to. So, looking at this list, having many of these traits being classified as masculine by the character's creator, how can Quinn NOT make a rather concrete (to her) guess that Tess is transgendered? Especially when the voice and jawline are clearly defined as being masculine? Now, it would be easy to say that Quinn has no way of knowing that Tess is FTM or MTF, or maybe Tess is a crossdresser, or maybe she hasn't had surgery at all. maybe she is still a guy, just pretending to be a girl. Hence why she didn't specify. She wouldn't know that at all since FTM hormones DO affect the voice, and the others are self explanatory. But to believe she is a natural female just based on looks? No. There isn't enough evidence to support that.