Yep, similar happened to me years ago with a girl who knew the system (as I do). But I didn't abuse her, nor have any evidence against me that I abused her, I did not indulge her threats and of course nothing happened.
That is the difference in Daw's case as the prosecution would not get this far purely on baseless claims. They wouldn't bother wasting the Court's time with such a high burden of proof.
He is either guilty of forcing sexual behavior against her will, sexual events happened and she stopped consenting half way through (creating a massive grey area in law), or it was consensual all along and she is blatantly lying about it. They are the plausible accounts of what happened based on the charges so one can only hope justice prevails one way or another.
How is there a "massive grey area" when she stops consenting? She consents until she doesn't, after that anything he does is without consent and is rape. If she says stop he HAS to stop. There's no grey area there that I can see and it's concerning if people think there is a "grey area".