Answer:
In the context of residence patterns the example of Nina and Declan going to live in her parents house is an example of "Matrilocal Residence".
Explanation:
Matrilocal residence is the type of residence patterns in which the newly married couple moves to the bride's residential establishment and her family. The name comes from "mater" the Latin word for mother and the "local" English word for location. This type of residence pattern is one of the 4 different variations that exist along with their subvariations. The other 3 types are Neolocal in which the newly married couple finds a new home. Patrilocal in which the couple moves with the husband's family and Avunculocal in which the new couple moves to live with the husband's mother brother.