Meghan Markle reportedly found her walkabout at Windsor alongside Kate and William "very difficult".
The Duke and Duchess of Sussex had returned to the UK for the Queen's funeral, and appeared for a public walkabout at Windsor Castle, meeting well-wishers who had gathered to pay their respects.
According to a new royal book Our King: Charles III, by Robert Jobson, the Duchess of Sussex found the day testing for a number of reasons, including being away from her children, Archie and Lilibet.