She researches on conflict and peace building, religion, genocide, transitional justice, sexual and gender-based violence and psychosocial studies.
Her doctoral thesis is titled "The Muslim presence and representations of Islam among the Meru of Kenya.
[2] Kubai researches on religion, interfaith relations, peace and conflict, gender, and sexual violence and the way spiritualties/religions (indigenous and others) shape social-political developments, post-conflict social reconstruction and the sustainability discourse in different parts of the world.
[1][6] For instance, her work on Post-genocide Rwanda examines the role of religion in reconciliation and reconstruction of the society.
She has also appeared in a number of documentaries including Ordinary Savage: The Origins of Violence and Hurt Feelings (2018).