Omg, I'm sorry that she treated you that way. It's petty of her to block you afterwards when it sounds like you had a civil, constructive discussion.
Maybe you informing her that heteroflexible is an offensive term did teach her something, though, because I don't think she's claimed to be heteroflexible since that one time? And she changed her blog post again:
"Now, I'm not gay. I’ve kissed/been attracted to few girls in my brief existence, so I’m not sure if or where I fall on the LGBT+ spectrum anywhere? So, i don’t have a coming out story and I can't imagine what that conversation is like." (
http://www.carriehopefletcher.com/2018/03/when-i-am-parent-response-to-love-simon.html?m=1).
It doesn't mention the word heteroflexible anymore, but I remember the first version said "I am straight", so she changed it a third time. As a queer person, I am still so annoyed by this whole thing, though. Someone should teach her about the Kinsey scale. Like, many, many straight people are curious or kiss people of the same gender now and then, but it doesn't mean they're lgbt. And how could she get so enraged by people questioning her when she had literally said - recently, too - that she was straight.
I see Megan Jayne Crabbe is dating a woman atm. Wonder why she didn't call Carrie out on the heteroflexible thing at the time, but maybe she didn't see it. They seem to be only acquaintances, anyway. And it's not like it's her job to inform Carrie, but given how she seems to support Carrie a lot on SoMe, I'd be surprised if she accepted her saying she was heteroflexible.