We shall add a disclaimer. Her aunt identifies as a man, testicles are the final piece of the puzzle for her, she gets them and feels her gender identity is truly complete. Now she really does feel like she is Savannah's uncle.
Phew. Problem solved.
It's not high tension, I am just not afraid to call people out on their oppressive commentary. Most people don't realize there's anything wrong with it, and I don't blame them. My aim is purely to educate, no hard feelings.
Also, trans* people feel like the gender they identify as regardless of the stage in their transition, and it is offensive to imply that receiving testicles is what allows a trans* person to "really" feel like their identified gender.
(Aaaaand I think I just outed myself as a trans activist and ally)
ETA: it is also disrespectful to address the theoretical uncle with female pronouns after establishing that he identifies as male