It’s worse than that. Girls can’t be executed in Iran. Unfortunately, culturally, once you’ve had sex (or been raped) you’re not a girl. Therefore they must rape girls and unmarried women so they can be executed. It’s been a norm for decades in Iranian prisons. To them it’s bonus points that some interpretations of Islam don’t allow these women into heaven as they died not virgins while unmarried. Virgins always go to heaven, so that must be stopped to them.