I like this Manhwa it has the same vibe as A Stepmother's Märchen

So I read this in the novel updates and the 2nd prince is the ML <3 so here is the other spoilers :)

FL pretended to be an old fortune-teller and jumped in front of ml's carriage. She told him that she would send her granddaughter to him to help him. FL pretend to be the granddaughter and dyed her hair black. She became an imperial maid to help ml track down the perpetrator. She is abused by other maids. They starve her but she got the ghosts to help her find food. When Ml and fl met again after some time he said she seems to have gained weight. Their dynamic is pretty funny. She isn't one to lose a verbal fight so they bicker often. They found out that the golden cup that ml has to drink from will be poisoned. Fl snuck into the kitchen, switched out the poisoned wine bottle, and stayed out to catch the middleman. She caught him and took him out of the garden but the bad guy realized that he could just overpower fl which he did. She fell and got scratched and almost got killed. Ml showed up to save the day. Ml wasn't too happy that fl got hurt and hugged her to comfort her because she was shaking. She blurted out that her scratch will get better with some spit. He kissed her hand and invited her to dance. they danced and went back. He told her to put something else besides spit on her wound.