She has worked as a lecturer in politics and later as a consultant focusing on implementing human rights.
She is a member of the executive committee of the European Women's Lobby, representing IAW.
In 2021 Böker took part in a CSW forum co-hosted by IAW and its affiliate, the Icelandic Women's Rights Association, on the importance of the women's movement countering "anti-trans voices [that] are becoming ever louder and [that] are threatening feminist solidarity across borders," where she discussed her trans-inclusive position.
Böker stressed the importance of working on the basis of human rights, that are indivisible and universal, and to defend openness and democratic values.
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