Kelvin car and now this ?? Perth is seriosuly fked...
First thing first, get a good lawyer and obtain a restraining order against her. If she gets close to 100m to you or your property, you can call the cops and it will definately help you when this is escalated to court.
Second, sue to shit out of her and recoup as much money as possible though i'm sure somethings in life you can't buy with money.
If she can't pay up, she'll have to declare bankruptcy which kinda screw her up for 8 years (i think) in terms of employment, loans and buying of any assets
Just by 2 cents