Everything Happens For A Reason

Nina Evans is the woman a man who could ever wish for, beauty, intelligence, body, power and money. She is desired by countless men and became the first empress of business world, entering the top ten ranking in the world made her more impossible to have. But one day, she collapses, and she thought it was just due to fatigue after countless of nonstop work and sleepless night, but unfortunately, after being in the peak of her life.
She was diagnosed of Terminal Disease, she is adored by her parents as she is the only child they have, and they did everything they could to find a cure for her. But even with the modern technology of today's era, they didn't manage to produce any cure and Nina died at the age of 27, leaving everything behind. Her money, power and the empire she's work hard for to achieve and the most important part is that, she never experiences to fall in love. And that is her biggest regret, being too busy building her career for her future, she never tried to find that one most important thing.
But, to her surprise, she didn't completely die. She was transported to the unknown world wherein, she doesn't have anything at all, and that she is supposed to be the antagonist in the heroine's life. The life that she used to live is now in another's hand while she is crawling in the dirt.
How would she handle this situation?