NEW : Actress Alyssa Milano , who did a USO tour with Murphy in 2003 , wrote : `` She was a sweet soul , with a lot of talent and heart . '' An autopsy was conducted Sunday on the body of Murphy . No signs of foul play or trauma , coroner 's office spokesman says . Actress pronounced dead Monday morning at Puerto Rico hospital , spokeswoman says . Murphy starred in `` King of the Hill '' and `` 8 Mile , '' and did voice of Luanne in `` King of the Hill ''
NEW : An autopsy was conducted Sunday on the body of Murphy . No signs of foul play or trauma , coroner 's office spokesman says . Actress pronounced dead Monday morning at Puerto Rico hospital , spokeswoman says . Murphy starred in `` King of the Hill '' and `` 8 Mile , '' and did voice of Luanne in `` King of the Hill ''