In particular, White challenged the idea of having Spiritual Assemblies and the appointment of Shoghi Effendi as the first Guardian, spending decades trying to stop him from assuming a position of leadership over American Baháʼís. During her time of opposition, White wrote several letters to the National Spiritual Assembly of the Baháʼís of the United States and Canada objecting to Shoghi Effendi and the idea of Spiritual Assemblies. She wrote a letter to the United States Postmaster General requesting that the National Spiritual Assembly not be allowed to use the mail system, and she also wrote to the High Commissioners for Palestine with complaints about Shoghi Effendi.