Help me find a historical manhwa

The girl has pink hair and I think red eyes. I remember she got this but because she helped a ghost (she can see ghosts) and then uses the nut to heal her father. She is not the real daughter of the duke she was a replacement I think but the real one shows up, but I remember her conspiring with the temple to make everyone in the house like her or something. Also this girl is fridnds with the old cook ghost and the butler ghost.