Complex sentence: She was less fortunate in her marriages (three of them) than in her career, and her third husband dissipated the considerable fortune she had amassed, forcing her to continue to give concerts long after her voice had gone.
Split into simpler sentences: She was less fortunate in her marriages (three of them) than in her career. Her third husband dissipated the considerable fortune she had amassed, forcing her to continue to give concerts long after her voice had gone.