[quote=Jazzy]
Personally I think it would be impossible for her to tell (Growing up with it or not) unless she pulled down Tess' shirt to reveal that her boobs were actually oranges, but hey, if Allen's cool with it I will be too. Just don't do it to any of my characters.
[/quote]

It isn't impossible for people cut of a similar cloth to not recognize certain attributes within others based solely on personal experiences or extended exposure to it. Pulling down someone's shirt isn't a good way to "prove" something like this. Breasts can be added on surgically to just about anyone. 
It will take an exceptionally long time to explain why it is not impossible in the least, but I'll condense it: Experiences resonate. Soldiers that have been in combat can easily pick out who is green and who else has seen combat, with just a meeting of the eyes. Rape victims can recognize other victims with just a glance. Heck, in my experiences, musicians can often tell whom else is a musically inclined. Best way that I can explain, there is just something that you can feel. You can see it in the way someone may talk, act, think, or do stuff. It is in the way they carry themselves, the way they dress or interact with others. 

For someone like Quinn that has spent her ENTIRE life dealing with this, literally from birth til now, she can recognize when someone is transitioning. Now what exactly is it, she doesn't know. Tess could be female transitioning to male, or male transitioning to female. Maybe she is like Quinn and is in the process of getting corrective surgery. Quinn knows Tess is transitioning, but she doesn't know it what capacity or why. She doesn't know when or how or what medication/hormones (if any) that Tess is taking. So yes, I will continue to RP my character as she is. If you make/have a character whom is in transition, or post transition, she will recognize it and she may or may not comment on it