I suppose she'd be scared most likely) Well i'd sent letters to Dan Radcliffe and Rupert Grint also when i was 12 or 13 and i received their autographs)So i hope it's possible to get a reply from Miranda.
Aw this is such a good idea! I wish I'd signed up sooner and I would've joined in. How long did the letter get to be? I wrote to JK Rowling and got a very long reply Of course, I secretly hoped I would get my letter in the back of the next Harry Potter book. Alas, no such luck!