Susan Reynolds, daughter of veteran Hollywood and New York publicist Lee Solters, is leaving her father's firm of Solters/Roskin/Friedman Inc., and she is taking the Frank Sinatra account with her. Starting next month, Reynolds becomes vice president and manager for the new entertainment division at Burson-Marsteller, helping to bring corporate sponsors together with major entertainers and entertainment events. Of the impending split, Solters said, "It's the nature of this business or any business. We've enjoyed a long relationship, and I wish everyone the best." Solters isn't exactly left bereft--he still handles a big-name client roster that includes Michael Jackson and Barbra Streisand.