I watched this between 2000-2009. It was on TV and could have either been in Cantonese or Mandarin. It was basically about two women who were rivals and friends at the same time. One woman abandons the other to die somehow and ends up getting sabotaged and haunted by the other’s ghost in revenge. In particular I remember the ghost killing the woman’s young daughter by pushing her off a balcony. On the other hand I could be very wrong and it’s not a ghost story at all but one about murder.