Article continues below advertisementIn a chilling reality television meets true crime crossover, Summer House star West Wilson's cousin has been charged with murdering their grandmother.West's cousin, Dakota Sweeney of Carrollton, Mo., was arrested on Wednesday, April 22 - one night before his relative's explosive Summer House Season 10 reunion was taped for Bravo.Dakota was ultimately charged with the first-degree murder of his and West's grandmother Gayle R. Wilson. The 75-year-old was a stepmother to West's father, Bruce, and Dakota's mother, Kelly, according to TMZ.