 Principal also took to other ways of improving her character, such as taking voice lessons to perfect a Texas accent.Her relationship with Patrick Duffy's character, Bobby, was a central component to the show, and when Duffy returned to "Dallas" in 1986, after being killed off a year earlier, the entire previous year had been written off as Pam's dream.Principal received positive reviews for her portrayal of Pamela and a Golden Globe nomination in the category of "Best Actress in a Television Series" at the 40th Golden Globe Awards.