Well, it's not like she wants to adopt the whole World and raise it and help it to become the better, just like The Kim family did for her. But, there are those three little kids, to whom she wants to raise as her own. When she started living there in the slum area, she faced tones of problems. That was the time, when she met those 5 years old kids, who far surpassed their ages, on the level of intelligence.
And it was them, who helped her out every single time. So, when she started earning, the first thing that she did was to administer them to the govt. school. Then, she promised to take care of them, to make sure that they would be well fed and well bred under her supervision and strict care.
