I don't know whether she is actually racist herself or not, but she is definitely willing to promote racists like Christopher Rufo and Matt Walsh so long as she sees them as being on her side regarding her hatred of trans people. On that basis I don't think it much matters what she actually believes, what's she doing is spreading racism
How long before we start hearing her spout that old canard about "well, as much as I disagree with Nazis, at least they're willing to speak honestly about the threat of <insert libelled minority group here>"? I believe this naziwashing manner of argumentation is called the Sam Harris Code-Injection Exploit.
Or my personal favourite: "Given how much society and the media have lied about trans people being human beings, I've now started to question everything else I've been told, such as the efficacy of COVID-19 vaccines and the truth about the Holocaust".
I think Graham Linehan has actually said that about vaccines and climate change, that he now questions them because most of society doesn't agree with his vicious bigotry about trans people. JKR isn't far behind him.