Rowing is a terf, how do I prove it?

So originally I was sceptical about the TERF claims on rowling (because I didn't want them to be true), I'd assumed terminally online people had decided something silly (as has happened before), but the more I looked at it and thought about it, the more I thought, "Ok, I don't really have proof here, but the odds are looking pretty fucking likely that she is, surely it'd be quite easy for her to just say something publicly like "trans women are women" and it'd be all over".

The problem I'm having at the minute, is my wife still thinks that it's all probably something that's been blown out of proportion, and I can't explain to her why I'm not excited by the new Strike novel, or why I won't play the Harry Potter game. How do I prove to her that it isn't something that's been blown out of proportion and that Rowling really is a TERF