Complex sentence: Fifteen years earlier, Mavis had one huge, spectacular hit song, "Dont Hide Love"-and, quickly realizing that her initial success was a fluke, she parlayed her finances from that hit into purchasing the Lamont Hotel in Manhattan.
Split into simpler sentences: Fifteen years earlier, Mavis had one huge, spectacular hit song, "Don't Hide Love". Quickly realizing that her initial success was a fluke, she parlayed her finances from that hit into purchasing the Lamont Hotel in Manhattan.