#Yaz is just trying to be nice but she is so acared to miss gender the Doctor because she respects them so much

[hey-there-22]

13th Doctor newly regenerated: why are you calling me madam?

Yaz panicking thinking she just misgendered someone: I'm sorry... sir?

13th Doctor not giving it too much thinking and continuing with her regeneration drama: :)

Later that day

13th Doctor looking for a new outfit in the TARDIS, finding out about her new body and going out of the TARDIS where Yaz is waiting: I need new clothes, I'm a woman now, you coming?

Yaz assuming the Doctor is gender fluid: yeah, cool.

And they continued to be mutually confused for an entire regeneration.

Yaz doesn't know when to use each pronoun so she just uses them randomly when speaking about the Doctor. The Doctor is so confused on why she does that at the begining but she doesn't care enough about her gender to correct Yaz. They never ask eachother about it. They just chill.