Historias de Dnaornurture

Addison fosters Harper and Harvey (Amelia's twins) for a year, but when the twins are given the opportunity to go back to their birth mother or get adopted by Addison whose been more of a mother than Amelia has. Who will the twins chose? Does nurture really trump DNA? PS. I own nothing except for Harvey and Harper. If owned PP, Addison would be with Pete raising Lucas.