Vincent's mind was filled with the information he had just received during the trip. Does Chloe have a child? And Catherine is her daughter? This is so impossible. If indeed Chloe had a child, why did she hide it? And why did Chloe let her daughter leave her house?
Then what about Cathy's three sisters? Were the three of them also Chloe's children? It just made no sense. Chloe had died eighteen years ago while the twins were around sixteen years old. If Catherine is indeed Chloe's daughter, Anna and the twins are not Cathy's siblings.
In retrospect, apart from Cathy, Anna and the twins' hair did not have the distinctive features of most Paxton members. Anna has very light brown hair towards blonde while the twins' hair is blonde. Only Cathy inherited the reddish-brown hair, which was a hallmark of the Paxton family members.
