[1]: 4 After her children were born, Inga continued her doctoral studies and helped with Olov's research as well as caring for the family.
[2]: 8 Olov credited Inga with doing "a lion's share of the 'donkey work'" of annotation, typing, drawing illustrations and proofreading in his own Ph.D. thesis,[3] and the couple frequently published papers together.
She was first listed as a member of Association for the Taxonomic Study of the Flora of Tropical Africa (AETFAT) in 1963, the year that her husband became the organisation's general secretary.
[1]: 12 Reviews of the Flora were positive, noting the significant involvement of Ethiopian botanists, the use of Geʽez script for common names, and the new illustrations of Malvales species.
Inga was "deeply affected" by her experience of Olov's final weeks in hospital in Sweden; in 2017, she published a case study titled Så kan det vara: en fallstudie av svensk sjukvård, 'That is how it can be: a case study of Swedish health care', which outlined the problems of unsatisfactory communication between elderly patients and healthcare workers.