is she using any / other PEDs at all for this prep?
In "my experience" with natural female athletes, I have never seen staying on BC cause any issues whatsoever. BC actually help regulates hormones more consistently than not being on, and stopping may cause more fluctuations than not. That said, like in my original question, I do not know if other compounds to interfere or cause issues, as my experience with PEDs and competitive females is 0