The youngster was killed during a search operation in the town of Subkhan, in the eastern oil hub of Deir Ezzor, the Syrian Observatory for Human Rights said in a statement received in Nicosia.
Her death came after at least 23 people were killed in violence on Wednesday even as Arab foreign ministers met in Morocco to discuss further sanctions against the Assad regime after suspending Syria’s membership of the Arab League last weekend.
Warning that their patience was running out, the ministers gave Damascus “three days to stop the bloody repression”, Qatar’s prime minister said.
“But if Damascus does not agree to cooperate with the League, sanctions will be adopted against Syria,” Sheikh Hamad bin Jassem Al-Thani told a news conference.
Arab states had “almost reached the end of the line” with Damascus, he said.