Now she has been nominated for the International Children's Peace Prize -- an award previously won by Malala Yousafzai -- and, like her Pakistani counterpart, hopes to spread her message of universal education and fundamental rights for Afghanistan's youth.
"These children are the products of war," Aziza says during an interview with AFP from the Kabul camp for internally displaced people where she was born after her family fled fighting in the Parwan province in 2001.
"Their families are also uneducated so sometimes we have to convince them too."
It is a thin line to walk, both for someone so young and without stirring a backlash in a conservative society unused to children, particularly girls, speaking up for themselves.
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Aziza's confidence impressed the Mobile Mini Circus for Children (MMCC), an international humanitarian group founded by Danes Berit Muhlhausen and David Mason, who moved to Afghanistan shortly after the fall of the Taliban regime in 2001.
In a country ravaged by decades of war, where more than 60 per cent of the population are under 25, those needs are great.
"She was very special from the beginning. She was thinking more than the others, advocating for others, asking questions. Gradually she became a representative for the other children," said Mason.
In "shuras" (consultative councils) organised by the group, Aziza quickly identified pressing issues faced by the 500 or so children in her camp, and others like it in Kabul.
Another key issue was education. As children of refugees born into abject poverty, those in the camps lacked the necessary documentation for admission into the capital city's schools, with Kabul authorities viewing the internally displaced people as temporary migrants who would eventually return to their home districts.