Here's the thing, and I am sure I said this in Quinn's profile: 

SHE IS STILL GOING THROUGH DECIDING IF SHE WANTS TO TRANSITION OR NOT. 

I am not setting the course of the role play, I am setting the course of MY character. She is drawing on her own LEGITIMATE experiences and LEGITIMATE knowledge to draw such conclusions. It isn't just "my trans senses are tingling". It is a part of it, yes, but look at how Quinn has been acting. She has taken her eyes off of Tess once in their entire interaction. She has been studying Tess and listening to her. She has looked her over quite extensively, and Tess has shown her face. As Jazz describes it in Tess' appearance section, her face is very masculine with the chin and jawline, but is somewhat given a feminine nature thanks to the scarf. The jawline is very difficult to shape and is quite expensive to do correctly. In the same vein is the chin. Quinn would know this as she shares a similar trait and thus would need to go through the process to become a full female.

And I didn't say anything about "good" soldiers. I said that soldiers that have seen combat can easily recognize soldiers that are green and soldiers that have seen combat. It has nothing to do with knowing their service record or even being in the same station as them. It isn't just a feeling. They can recognize it in the way they carry themselves and in how they talk or move. They recognize it because they see it in a mirror. 

Quinn is a character that is drawing on her own personal experiences to make a call. Good or bad, it doesn't matter. It is a HUMAN call, and one that she is perfectly capable of making based on her personality.