Song Ji Eun might be a pampered heiress but she wasn't unreasonable. She treats the servants of the house respectfully and doesn't boast about her background. One can even say she despises her opulent background and wishes for a simple life. All her things are simple and plain, they might have cost a fortune but she doesn't like loud colours and hate socializing.
Among the high societies, she is regarded as a proud peacock, always arrogant and unfriendly. There is always a scowl on her face, at every outing and events. So, even though, her beauty cannot be underestimated, she is given different offensive names such as "ugly duckling", "scowl queen", "arrogant bitch", "proud witch", and many others. It's not like she is oblivious to all these, however, Ji Eun has never been one to give her enemy the joy of victories, or surrender without a fight.
The most baffling and amazing thing is that, despite her bad reputation, Mo Han, the young master of the Mo family always tends to her whims. They have been friends since childhood, and he is known to dislike anyone who talks bad about Ji Eun and sometimes even take revenge on her behalf. Like, bankrupting the said person company or making things difficult for them depending on the shade of Ji Eun's face when she was offended.