What Are The Tirplet Sisters

Not only are they descendants from Medusa but they can see monsters, and sense the monsters are evil they have to fight the monsters wth their fans that they have hidden in their teeth and they contain a venom that "is a one way ticket back to the monster realtm" so that they cannot take over the human world. The tirplet sisters were separated at birth. At the beginning of the story there were only two sisters and their names were Grace and Gretchen. They did not know about the third sister until Grace decided to read a bood that said there was a third sister, all of the descended generations have triplet sisters and only three sisters in that generation. They last sister is named Greer together they form the Key GEneration, the one generation