In what way Is JKR a horrific person? That's a really strong statement.
Surely it can't just be that you disagree with her on one or two issues?
^"I believe the majority of trans-identified people not only pose zero threat to others, but are vulnerable for all the reasons I’ve outlined. Trans people need and deserve protection. Like women, they’re most likely to be killed by sexual partners. Trans women who work in the sex industry, particularly trans women of colour, are at particular risk. Like every other domestic abuse and sexual assault survivor I know, I feel nothing but empathy and solidarity with trans women who’ve been abused by men.
So I want trans women to be safe. At the same time, I do not want to make natal girls and women less safe”^ - J. K. Rowling
Just incase you have heard she is horribly transphobic without actually reading her long, thoughtful piece on this issue. Here it is in full ( www.jkrowling.com/opinions/j-k-rowling-writes-about-her-reasons-for-speaking-out-on-sex-and-gender-issues/ )
It's okay if you don't agree with her and think she's drawn the wrong conclusions from her research. But I don't think her actual words and actions deserve to be called "horrific" or transphobic.
It's okay to disagree with someone and still think they are a compassionate person sincerely engaging with the issue and trying to be thoughtful about how they respond.
When you say she is horrific and people read her freely available words... I think like me, they will struggle to understand your point of view.