Complex sentence: As Countess Spencer, Raine was unpopular with her stepdaughter Lady Diana SpencerDiana even went as far as to use the nick name Acid Raine when refering to her step-mother.
Split into simpler sentences: As Countess Spencer, Raine was unpopular with her stepdaughter Lady Diana Spencer. Even going as far as to use the nick name Acid Raine when refering to her step-mother.