I've lost my daughter to trans activism

She's entitled to her views, even ones that are different to yours. Keep discussing it if you agree to give each other the respect to state your views and both listen. If it's causing rows and you don't want it to you will need to agree to disagree. She's your daughter so I'm sure there is more to your relationship than this topic.

My daughter is straight but I know we would completely disagree if we discussed this. I don't talk about it to her and if she brought it up I'd say we should not talk about it as we'd probably disagree. I feel she'll move on after a while and vomit up the Kool Aid, but until then I'm not risking anything.

Can you agree to disagree with her, particularly as she sounds as though she's not very happy at the moment?

Don't give up on her yet. I have a friend whose daughter went to Uni and thought the same way your daughter did, her mum is GC and found it difficult, but having finished Uni her daughter is slowly changing her perspective.

I met a young woman recently, I think she was a first year student, I felt so sorry for her as she seemed so miserable and confused mainly because she seemed to push her own needs and thoughts aside because her friend was a transwoman. We agreed on a lot of points to a degree then we would hit a point and she'd say 'but my friend is a transwoman'; in my opinion he sounded like a manipulative shit and probably contributed to her binding. I do feel as though students on some courses feel as though they have to accept the trans narrative in order to fit in even if if means ignoring their own discomfort with the narrative.

My 15 year old dd is the same. It’s so sad and frustrating. I can’t get through to her the importance of safe female only space...her argument is that trans women are female. I can’t get her to understand the unfairness of someone who identifies as a woman but is biologically male being able to compete against biological females in sports. I just don’t know what to do.

Channel a toddler, ask her ‘why?’ a lot.
Get her to explain all her positions to you, really explain them (because obviously boring old mum hasn’t a clue). She’ll realise how illogical she’s being eventually. Either that or she’ll be turned on for claiming to be part of the trans community without actually being trans/not being a loyal enough ally.

Loads of women think feminism is old hat and not necessary until something happens that makes the invisible patriarchy walls apparent. For me (like many) it was pregnancy.

Don’t let this be a wedge between you - eventually she will realise you were right all along.

How frustrating and upsetting.
But, you're probably better off not getting into a big row over this.
Perhaps say you'll have to agree to disagree and change the subject..
But maybe ask if she as a lesbian would actually be willing to have a sexual relationship with a transwoman. If not, why not.
It's unlikely you'll be having these conversations in a few years time.

You haven't lost your daughter OP, that's a bit dramatic for a political opinion no matter how misguided. I joined the socialist workers party at university and tried drugs, my Tory voting dad just laughed at me.

First year at university is peak idealism meets minimum life experience. I went full TWAW at uni. Much like the socialist workers party, I realised it was heavily misogynist and grew out of it.

Talk about normal stuff. Don't get into a head to head. Your views will have an influence.

And if she would be okay with it then ask her if she thinks other lesbians should have the right to turn transwomen down without being labelled bigoted and transphobic.

Remind her that LGB part of the LGBT community spent years fighting for her right to choose who she should be able to love. Remind her that if she thinks lesbians should have sex with transwomen then she is throwing all of that hard work back in their faces.

I dunno know.
Ask her if she’s happy with kids being experimented on

Will she shag a person who claims to b3 a lesbian but has a penis cos that is what i5 boils down to in the end

BEcause she is still young and hasn’t experienced bad stuff.

Ask if she would be okay with having sex with a transwoman who still has full male anatomy.