Just wanted to share as I'm so chuffed.
It came on yellow paper inside a hand-written envelope with a Harry Potter stamp so, as I was pulling it out, for a split second I genuinely thought it might be a Hogwarts acceptance letter 
Sadly it wasn't (tbf I think my presence at Hogwarts would be a safeguarding issue since I'd be the oldest pupil by about 15 years) but it was a lovely response from JK's office sincerely thanking me for my letter of support.
Am ridiculously pleased. And also impressed that, for a minute there, she made me feel like a kid again 