I first met Marianne at the Aussiecon 3 writers' workshop, where we all had to send in 4500 words of a work in progress, read it and discuss. I missed a lot of that workshop because I had to go off and arrange Terry Pratchett's talk to the children, but I do remember how nice she was. She has since visited my school for free and talked to my book club and popped up stuff about it on her web site.
And is a big name local writer who has created some amazing worlds from cyberpunk to space opera to YA dystopia. Onya, Marianne!
Do go if you can!
Here's the link for you - you can book online.