Four-year-old Rena was sitting in her mother's lap on the family's balcony in Aleppo, Syria, when a bullet from a sniper ripped through her cheek.

A CNN camera crew was nearby, and rushed to a rebel-controlled medical facility with the little girl. Although doctors there were able to stabilize her condition, they lacked equipment to give Rena the surgery she needed. Only one option remained: to drive Rena across Aleppo's front lines to a government-controlled hospital, where doctors hopefully would be able to save her life.

In the exclusive report above, CNN documents the tragic event.

Activists say more than 5,000 people were killed in Syria in August, making it the deadliest month since fighting began in March 2011. UNICEF, the U.N. Children's Fund, said more than 1,600 people lost their lives last week alone.

"The reason behind the high death toll is military operations, shelling, clashes and air raids," Rami Abdul-Rahman of the Syrian Observatory for Human Rights, a London-based activist group, told the Associated Press. "I would say most people are killed in clashes and executions," he added.

Watch the full report in the video above or read more on CNN.

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  • Tawfiq Hassan

    Syrian rebel fighter, Tawfiq Hassan, 23, a former butcher, poses for a picture, after returning from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Abu Hammam

    Syrian rebel fighter, Abu Hammam, 23, a former member of the Syrian security forces, poses for a picture, after returning from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Ali Alnajjr

    Syrian rebel fighter, Ali Alnajjr, 20, a former school student, poses for a picture, after returning from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Saqir Abu Zahid

    Syrian rebel fighter, who goes by the name Saqir Abu Zahid, 22, a former University student, poses for a picture after returning from fighting Syrian forces in Aleppo at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Mohammed Yaseen

    Syrian rebel fighter, Mohammed Yaseen, 24, a former construction worker, poses for a picture, after returning from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Mustafa Abu Shaheen

    Syrian rebel fighter, Mustafa Abu Shaheen, 19, a former construction worker, poses for a picture after returning from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Mohammed Sami

    Syrian rebel fighter, Mohammed Sami, 22, a barber, poses for a picture after returning from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Ahmed Al-Saleh

    Syrian rebel fighter, Ahmed Al-Saleh, 22, a former policeman, poses for a picture after returning from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Wisam Al-Saleh

    Syrian rebel fighter, Wisam Al-Saleh, 21, poses for a picture, after returning back from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Mohammed Abu Razouk

    Syrian rebel fighter, Mohammed Abu Razouk, 27, poses for a picture, after returning back from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Badir Farouh

    Syrian rebel fighter, Badir Farouh, 17, poses for a picture after returning from fighting against Syrian forces in Aleppo at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Badir Farouh

    Syrian rebel fighter, Badir Farouh, 17, poses for a picture after returning from fighting against Syrian forces in Aleppo at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)

  • Amir Hajji

    Syrian rebel fighter, Amir Hajji, 20, poses for a picture, after returning back from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea, on the outskirts of Aleppo city, Syria, on Sunday, Aug. 26, 2012. (AP Photo/Muhammed Muheisen)