Complex sentence: Carrie was outraged to learn that the King brothers had been charged with their father's murder, warning them to stay away from Scarlett and buy her out as she was acting as Scarlett's trustee, which delighted Matthew.
Split into simpler sentences: Carrie was outraged to learn that the King brothers had been charged with their father's murder and warned them to stay away from Scarlett. She also asked them to buy her out as she was acting as Scarlett's trustee, which delighted Matthew.