The Forsaken - Amy Shannon's Short Story Collection, #1

Ballston Spa is a small village in the middle of Saratoga County, and it is rich in history, including its ghost stories. Dorothy Wellington has a gift, a gift that sometimes she believes is a curse. She can hear dead people. They talk to her and she talks back to them. Her family has a very long, generational home that is placed in the Ballston Spa Village Cemetery. Her 103-year-old father summons her back home, a trip she dreads, but then feels at home once she walks up those steps again.
Her father needs a favor, more than one. First and foremost, help her newfound great-nephew Samuel with his gifts, and solve a two hundred-year-old missing persons case. Are these gifts and her knowledge as a historian, a foremost in her field, enough to figure out what happened to a young mother and her four-year-old daughter?