I think perhaps the only thing you can try to do is to minimise the damage that she is doing to young lesbians in her circle - and there will be young lesbians around, although they will be less likely to be calling themselves lesbians. (If you are dating or have dated a male or are open to dating a male it is safe - even trendy - to call yourself a lesbian but if you are actually a female homosexual ie suspected 'transphobe/terf lesbian' or 'vagina fetishist' it is safer to call yourself queer to try to fly under the radar a bit).
Ask her if she thinks some girls are only attracted to other biological females and whether she thinks that it is natural and acceptable or is it a learned prejudice that needs to be overcome. I think parents have a tendency to think that woke self-identified queers are just overly liberal, nice, inclusive if naive young people but that is often not the case.
When I was growing up, there was a lot of bullying, saying we were disgusting perverts, that we just needed to try d**k to learn to like it but we knew who that was coming from. These days it comes from ostensibly progressive heterosexual and bisexual 'queers' - for whom the label 'lesbian' is becoming increasingly popular, but this shouldn't be confused with any liking for or even tolerance for female homosexuals.
Even if your daughter isn't actively pressuring lesbians to have sex with men, she will be used as an example of a 'good' lesbian and proof that lesbians can be attracted to males if they overcome their prejudices.
A older friend of mine last year went to an LGBT group for the first time in many years and, when she described herself as a lesbian, the other attendees - one transwoman and a group of in reality heterosexual or bisexual women (whatever they identified as) -really interrogated her on it, questioning why she hadn't had sex with men, calling her bigoted (not just for not sleeping with transwomen but also for not being open to sex with male-identified men) - just a constant stream of attack for much of the session, which the facilitator just allowed to continue. She said she had never experienced anything like this since the 80s (although obviously back then it wasn't from within gay circles) and just kept saying to me 'but this is what we fought against all these years ago' because it felt like we fought and won this battle back then.
I've had more exposure to this kind of stuff and, although I also remember the old days and what was known for all that time (same-sex attraction is natural and innate, a lesbian is a woman who is only attracted to other women etc), when you are just constantly being bombarded with messages from multiple people that sexuality is fluid, lesbians can be attracted to males (not just transwomen - they say lesbians can be attracted to male-identified men) etc it just gets overwhelming and you feel like you are starting to lose your grip on reality and are back where you were as a young isolated lesbian with nowhere to turn - only this time it's worse as it's not just a case of escaping to the big city and finding the gay community because this is what you are faced with.
I can't even imagine what it must be like to be a young lesbian growing up now who doesn't even have that basis in reality, who will be seeking community and advice from 'lesbians' who could be heterosexual or bisexual and view not being attracted to men as a flaw to be overcome. Even if she is able to start to identify the problem, she can't name it as lesbophobia because the other (heterosexual/bisexual) lesbians aren't experiencing it - or are the ones telling her she is wrong.
I know a lot of heterosexual and bi women will view this as a quirky, maybe embarrassing, phase they went through as a teen - as though it's a crap haircut or dodgy taste in music - and will walk away from it and settle down with a husband and kids but I know I still struggle with some of things I was subjected to as a young lesbian by my peers and, whatever perception people end up with of the LGB community once the queers have finished with it, we have to continue to live with it.