Her gender change can't hide the beta male characteristics and stupid yuri logic that caused the transition. She's far too pathetic to pay for sex, she'd be scared of the prossie laughing or expressing horror at her appearance. Real woman terrify Lily, especially ones who treat sex casually and have some expectation of their partner delivering something to make it interesting. Lily's entire transition was based on the delusion that it would make her more attractive to women (absolutely retarded logic) and that she could find special Yaniv-like bonds with femfriends which could be converted into sex.
This is something that needs hammering into every transtrending "trans lesbian": lesbians are far rarer than gay men. They also have much higher standards than your average straight woman, both in appearance and personal/social qualifications/behaviour. Bisexual women are numerous, but it usually takes a 'piece of alright' to convince them to give it a go in between the boyfriends and husbands that almost all 'bi' women always seem to have. What people like Lily are left with are gender nonconforming shitshows who are generally too ugly for a transtrender to want, or sex workers, who people like Lily fantasise they can worm their way into the social circle of and get free friendly sex, in a pathetic Chris Chan-style imagination of how real people behave.
TLDR: she's being a manipulative piece of shit, as usual. Is trying to coopt other peoples struggles, as usual. And as usual, everything comes down to her male libido and fetishing of femininity. Her total undesirability both socially and amorously means she's always looking for access to women, and her "activism" conveniently is mostly based around this wolf in sheep's clothing advocacy role.
Edit: Also a "student sex-worker society" sounds awfully like a brothel.