Complex sentence: In 2014, she guest-starred in two shows, in January as Tracy in Modern Family, and in July, as Brynn Hendry in two episodes of the thriller show Extant.
Split into simpler sentences: In 2014, she guest starred in a couple of shows like in January as Tracy in Modern Family. In July 2014, as Brynn Hendry in two episodes of the thriller show Extant.