Sayuri huffed. "I just had to check... and Gale... I'm not saying something changed... Maybe... maybe you've always been biologically female..."
She sighed and sat down. "Look, I'm sorry... I should have asked you. But if you want to be sure, we can ask someone to make a karyogram for you. To check your chromosomes and stuff"

Sayuri just stared at the ground feeling a little bit lost and not able to gather her thoughts completely.
"Have you ever really checked on the internet how a male should look downstairs and how a female should look? Breasts are not a sign of someone being female. I mean, look at me. I have barely anything..." Her stare got a lot sinister at that. "And I'm pretty happy about that, too..."