She was knocked down by a taxi driver on Thursday when she was crossing the Madina-Adentan highway also known as N4.
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Her death sparked a spontaneous riot, resulting in road blockade, tyre burning and stone throwing.
The police responded by firing warning shots, teargas and applying minimum force to disperse the crowd.
She was a first year Home Economics student at the West Africa Senior High School (WASS) in the Greater Accra Region.
Mariam had albiinism.
Albinism is a comparatively rare genetically inherited group of conditions.
It causes pale skin which burns easily in the sun, virtually white hair, very severe short-sight and photophobia (a severe sensitivity to light).
Worldwide, one in 20,000 people is thought to be born with the condition.