What option does Indian nurse Nimisha, who has been sentenced to death in Yemen, have?

Nimisha Priya, a nurse from Kerala, was imprisoned for the killing of Yemeni man Talal Abdo Mehdi in 2017 and has been awarded death sentence in Yemen. According to Sharia law, a victim of crime or their family can choose to forgive perpetrator for monetary compensation. This 'blood money' is a pardon for person who committed crime, securing their release.