Choices in storygames are broadly understood in terms of how they affect causation and agency, however there is little scholarship in how choices add meaning to narrative context. This work extends that knowledge by looking at how Sonder, a storygame developed alongside this thesis, uses choice to convey characterization. We also discuss how Sonder frames the relationship between player and character, how current theory of agency can be used to understand this relationship, and how it uses agency to a narrative effect.