Last August I had the absolute pleasure of interviewing Margaret Mahy for my radio show - the focus of the iv was on her book turned TV series 'Kaitangata Twitch' , she loved chatting and had a great humour. She also spoke about her process of writing, favourite illustrators and more...
You can listen to the (edited) interview here: http://soundcloud.com/charlotte-ryan-nz/margaret-mahy-interview-with
I too was saddened when I heard the news of her passing this morning. I loved her books while growing up - especially 'The Tricksters' and 'JAM: A True Story'.