Lindsay Sandiford could seek a judicial review if Indonesia's Supreme Court rejects her latest death penalty appeal, human rights campaigners have said.
However, such a move would largely depend on whether new evidence had come to light, they added.
After that, her final resort would be to seek a reprieve granted by the country's president.
More top news
North Korea's leader hailed the testing of a H bomb as his greatest achievement in office during the first Congress in 26 years.
After years trying to rebuild its reputation following the scandal over blood doping, the sport is having to face up to another problem.
In the hours following the incident, journalists Can Dundar and Erdem Gul were found guilty in their trial for revealing state secrets.