Flowers are flowers, leaves are leaves

Reading manhwa Flowers are flowers, leaves are leaves / Bloom of Vengeance / 꽃은 꽃으로, 잎은 잎으로

Summary:

Hong Seol-young, the daughter of a concubine of a chaebol family, stood proudly despite all kinds of persecution, when her parents suddenly died in a car accident and Seol-young also dies under the guise of suicide. Seol-young curses the Hong family until the moment she closes her eyes. Seol-young, who suddenly came to consciousness, opened her eyes and found her surroundings reminiscent to that of a drama set of a historical drama.
"And when did my hair get so long?!" To make matters worse, there is even a girl who calls her a "lady"...?
In another dimension, Seol-young's revenge drama begins with 'Jang Seol-young' instead of 'Hong Seol-young'!