Actually all that you....or any of us actually know is that this person was assigned the male gender at birth and, for whatever reasons , at some point . came to feel that they were female. You know nothing about their biology and it takes a special kind of stupid to think that you do
In addition, it's beyond stupid to think that this WOMAN would pose a threat to females in the restroom SHE will just go into a stall and do what SHE needs to do. This is not about the safety of women, It is about hate and ignorance and a pathological need to debase trans people