Rita never stopped pushing herself, all for the sake of living a better life, for the day Rick would look up to her, always beneath her. She would crush him underfoot until the day she had vented enough and could finally kill him. Even now, as she held back from confronting the male and female leads, it was only to better use them, to backstab them later, expending the least effort to topple the powerful Su, Liang, and Han families.
There are many ways to hide in the shadows. You can be a rat in the gutter or a strong figure they look up to and respect.
In her previous life, her stats and level were never extraordinary. She survived on sheer combat talent, and Rick would occasionally bring her along to fights, using her to deal with people who had bad feelings toward him. This time, though, such a strategy wouldn't work. While she could give Rick a few "benefits" to gain his trust, Rita had no patience for humiliation.