Nobody should be beat up for simply entering a sex-segregated communal restroom, assuming that is what happened.

But why did this male-identifying female even ask which restroom she should use? She appeared male. Why didn't she simply access the male restroom?

TIFs confound me. They self-exclude from womanhood...make attempts to appear male, but then continue to access female sex-segregated spaces, services, and sports when the need arises, thereby helping to ruin the sex-segregated nature of these phenomona.

Indeed, she should be celebrating her baptism-by-fire entry into the male culture of aggression. These TIFs are dangerously naive.

Exactly. Men have been fighting each other over turf since time immemorial. If women want to be men then welcome to the fight club. Furthermore its this unconstrained male aggressiveness that makes it imperative that women have single-sex spaces.