This is apparently Joy Dettman's first published novel and I loved it.
She is an Australian writer, born in country Victoria,
who grew up in towns on either side of the Murray River.
It's not a recent publication - 2007 - but the first I've read of her work.
According to the inside of the front cover she has several more published now.
The Queensland Times review said :
" A stunning debut; a rich engrossing read; a tale of page-turning suspense and mystery;
a post morteum of family ties; all this and more, Mullawindy will grab you hook, line and sinker"
If you come across it grab it! I think you'll enjoy it.