The height of Charlie Kirk's wife, Erika Kirk, is not explicitly mentioned in the available search results. None of the biographical or news sources about Erika Kirk provide specific information about her height. Erika Kirk is known for her background as a former Miss Arizona USA 2012 and her involvement in conservative activism, but her physical height does not appear to be publicly documented in the sources found. If height information is crucial, it might require looking for personal interviews or less formal sources where physical descriptions might be shared.