Yvonne was sneaking out of the house with her brothers because they wanted to look at the festival. They got separated because there was a huge crowd of people and The two brothers lost Yvonne (they didn't have any guards because they sneaked out when they were children)
In the novel it was told that the time where the duke picked up penelope yvonne was actually aroung the corner but i think that was also the time where someone took over yvonne body
how did yvonne go missing? also did she go missing before or after penelope was pick up on the streets? and is she gonna appear??