An Darwin woman found not guilty of trying to assassinate East Timor's president two years ago says the country needs to review its judicial system.

Last month a panel of three judges found Angelita Pires not guilty of the attack on Jose Ramos-Horta in February 2008.

Ms Pires was the girlfriend of major Alfredo Reinado, the rebel leader who was fatally shot during the assassination attempt. More than 20 of Ms Pires's co-accused were found guilty.

But Ms Pires claims the prosecutors in East Timor have decided to appeal against the court's verdict on her. "A ludicrous appeal whereby nothing has changed," she said.

"There's still no evidence and just the very fact that the prosecution can appeal on a non-guilty verdict, a finding of no innocence, is completely unfair. It is a judicial system that needs to be reviewed and the right reforms put in place."