(Connor Sanders | The Salt Lake Tribune) Rosio Sifuentes, right, and Monica Calvo, center, sing one of Gabriela Sifeuntes Castilla's favorite songs while Juan Hernandez, second from left, embraces a mourner at a vigil in Taylorsville Tuesday, Oct. 19, 2021. Sifuentes Castilla was fatally shot at home early Oct. 17, 2021. Her former fiance has been charged in connection with her killing.