This in fact happened. A former commander with Jabhat al-Nusra, al-Qaeda's Syria franchise in Damascus instructed his two daughters to die in suicide attacks against regime targets. The older of the girls was stopped by guards before reaching her target so she is alive. The younger one is sadly dead.
Infowars has a succint report, along with graphics that you may not wish to see:
The girl detonated the bomb at the entrance of Al-Midan police station killing herself in the process while injuring one officer.
Photographs and videos have emerged of the little girls corpse and the destruction of the police station.
The little girl entered the police department and claimed that she was lost, according to Russia Today’s Syria correspondent Lizzie Phelan.
Witnesses say she then asked to go to the bathroom before detonating her explosive device.
The chief of the police station, Brig. Gen. Basman Zeidan, said that the bombing caused minor injuries to one policeman and material damage to the second floor’s offices and bathroom.
Pro-rebel sources have confirmed that the man in question is a former al-Qaeda fighter by the name of Abu Nimr from northern Damascus but claim he is mentally disturbed (obviously he is) and that he now operates alone as a kind of one man rebellion.
The father filmed the brainwashing he was conducting: