Also: she is lots of times in black and white.
She has few lines relative to the amount of time she shows up as a recipient of the male gaze through the entire film.
She doesn’t have to earn a living, or, if she does, it is something like waitress or bartender or artists model or something which makes her readily accessible as someone who can be watched and doesn’t need to talk.
She wears clothing if she has sex, covers herself when leaving bed after sex.
She always looks like she’s modeling lipstick, even if she’s not wearing any.
She could have a female partner in the student film or a male partner, but she’s mostly [in the student films I’ve seen] chosen to satisfy expectations of femininity which appeal to a male artist.
She puts up with a lot of mansplaining basic existential stuff she’s got to have experienced or thought of before.