From what I gather, her father tried to report that she was raped by three men. Instead of apprehending the rapists, the militia held her for adultery.
She was sentenced to death and stoned in a public execution.
And as if it isn't enough to imply she asked for death by committing the offense of being raped, I also found this quote that maintains she literally asked for it:
Our sister Aisha asked the Islamic Sharia court in Kismayo to be charged and punished for the crime she committed," local Islamist leader Sheikh Hayakallah told the crowd.And when her family tried to intercede at her execution because of her screams:
"She admitted in front of the court to engaging in adulterous sexual intercourse," he added.
"She was asked several times to review her confession but she stressed that she wanted Sharia law and the deserved punishment to apply."
[G]uards opened fire, killing a child, the witnesses said.