At age 15, she went into exile in Zambia, due to the ongoing conflict in South West Africa between the apartheid led military and the Namibian freedom fighters.

When she was injured in a South African Defence Force raid on Oshatotwa in 1976 she decided to join the People's Liberation Army of Namibia, during which she participated in the attacks on Katima Mulilo in 1977 and 1978 as one of only three female insurgents.

Sioka then worked as teacher at Namibia Health and Education Centre in Kwanza-Sul, Angola, until shortly before Namibian independence.

[3] When Hage Geingob became president in 2015, Sioka was returned to the position of Minister of Gender Equality and Child Welfare.

[5] In 2020, ShutItAllDown protesters demanded for her resignation after they claimed she could not resolve the issue of gender based violence in Namibia.