The second woman to be sentenced to death by stoning in 2012, she spent two months shackled, alone with her baby, in Omdurman prison, near the capital Khartoum.

CNN: Opinion: Sudan must end 'cruel' amputation punishment

Danyelle Williams, a forthright woman who teaches the classes, told me she was shocked when she saw a prisoner giving birth shackled.

BBC: The US women shackled during childbirth