Ain't she sweet? - Susan Elizabeth Phillips

In high school Sugar Carey had reigned supreme. She alone had decided what or who was cool. Her spiral perm had been the perm against which all others were measured, and her opinion on which boys were acceptable to date the only one that counted. A beautiful, blonde - if not always benevolent - dictator, she had a reputation for being the wild child in her home town, the girl most likely to set the world on fire, and leave a trail of destruction in her wake. When she left home she swore she'd never return. Only now, fifteen years and several husbands later, she's run out of money, luck and options. But Sugar arrives back home to discover that everyone else is living her life. Her half sister is married to Sugar's high school sweetheart, the teacher she schemed to get fired is now a successful novelist and owns her old house. She also discovers that people have long memories - especially where Sugar is concerned