Ashley Capes 
Crossings [EPUB ebook] 

Deep in the Australian bush, something dark is stirring.
When wildlife ranger Lisa Thomas finds a pile of animal entrails on her doorstep she immediately suspects her abusive ex, but the sudden spate of deaths that follow seem beyond even Ben’s vindictiveness.
Worse, her father’s health is deteriorating fast and when the harassment and deaths continue, it only fuels her feelings of powerlessness. To add confusion to growing fear, Lisa must also investigate reports of a giant white kangaroo, reports that suggest the creature is no mere hoax.
Yet the mysterious kangaroo is impossible to track down and the more Lisa searches the more she’s sure an even greater threat lurks in the wilderness…