As everyone says, you lucky lucky thing to have it in front of you! Secret History is top five of all time for me, read it in 90-something when it came out, read it again a few years ago, listened to the radio adaptation. I am kind of hooked! The Goldfinch is not far behind.
I thought Little Friend was fabulous..... until near the end when it slouched a bit for me.
I think how she writes so articulately that you can feel it and breathe it is sensational. In the drink/drugs induced stuff in Goldfinch, I felt like I'd had a skinful reading it, just conveyed the feeling of it so so well.
She writes so accurately, there is no muddling, each view point or sequence is exhaustively (but not excessively) described and revealed. She answers all your mental questions as you read, just as you are thinking "what is so and so going to do or think about that", you get it there for you.
Just hope we don't wait another ten years for her next one. I've read one in my 20's, my 30's and my 40's. PLEASE don't make me wait until I am 50 Donna!