Probably Bertha Bouman-Leviticus was the same person as Marianna Bouman-Leviticus, daughter of Michiel Leviticus and Hendrina Fett. Marianna married in 1900 in Roermond.
The gravestone of Marianna Bouman-Leviticus is mentioned in the book Verborgen in Brabants bodem, edited by J.Bader and M.Cahen.
Addition of a visitor of the website
The municipal list for the Vught Jewish community indicates that Bertha Bouman-Leviticus died on 16 June 1941.