I will be straight up and honest with you, most times when I meet anyone from the LGB, it's a hit-or-miss on whether they know wtf is going on with the TRA.

If your friend is young and into the movement, she may grow out of it. If you like her and enjoy her company, continue having conversations with her!

My "pansexual" coworker is OK to talk to. She's actually starting to call herself bisexual finally!! We don't see eye to eye on somethings, but that's life. We're both grown and capable of holdig conversations to where we disagree. I tested the waters previously. The convo of transing kids came up. I said I disagreed and that made her upset, and she said "Why not?". So, I explained my backstory of detransitioning and that shut her up and made her change the topic lol. She probably still doesn't agree with me, but at least I planted a seed so oh well.

Also...

Not because I have bias against bisexual people, but because I've come to realise usually people who push the narrative that "everyone's bisexual/little bit gay/everyone's on a spectrum" etc etc are bisexual (my mom included).

Anyone from the LGB can be part of the TRA movement. My former bestfriend was a lesbian and never really liked men, but she was also OBSESSED with labels, calling herself "pansexual" and trying to peg me as a "gender-fluid" or "non-binary"---basically shoving me in boxes I didn't feel comfortable with. She also had a HUGE crush on me too that I did not reciprocate for multitudes of reasons(ex. Extremely jealous, lazy, controlling, made me the "man" out of our...friendship, and into these annoying labels and an extreme fujoshi).

So...there are normal bisexuals out there---most times if they're into the TRA shit, they call themselves "queer" or "pansexual".

One of my old pals is bisexual but she has no knowledge of the TRA crap nor keeps up. She's the old school type.

TLDR; if you ENJOY being around your friend and think she's great, then talk to her about these topics! If you feel unsafe and don't want to, then don't bother.