The claim of Rowling being in the Epstein Files, is nonsense on the most fragile & wobbliest of stilts.
From Ladbible (!!):
"The ‘proof’ being posted by fans is a private invitation to the play on April 22, 2018, stating that the person in question (Epstein) was invited by ‘Sonia Freedman, Colin Callender, and JK Rowling’ to the play’s Broadway premiere.
(...) the invitation is a template that will have been sent out to anyone who was provided tickets from publicists or producers for the opening.
But email chains link Epstein’s invite to publicist Peggy Siegal, who was referred to by the New York Times as ‘Hollywood’s secret weapon’.
Siegal emailed Colin Callender saying: “Colin...I need a hugh favor [sic]. I need two seats just for the Hogwarth [sic] dining room dinner.
“It for a very important friend of mine that does a lot for me. He just wants to come see the spectacle. If the dinner is seated, he can sit with me.
“I wil [sic] take care of him. I will not ask you for anything else.”
https://www.ladbible.com/entertainment/celebrity/jk-rowling-jeffrey-epstein-harry-potter-emails-556263-20260203
Ladbible is not a terf stronghold. It's a 'fun' news-site aimed at young adults, largely male & particularly gamers. So its support/vindication of Rowling here is notable.