the phenomenon exemplified in this scenario Reverse culture shock
Explanation:
Reverse culture shock is a phenomenon that produces stress in the emotional and psychological capabilities of a person.
They suffer because they are not able to readjust to their normal life after being away for a long time and having adjusted to the foreign culture after going through a phase of culture shock over there.
This produces distress because they have been acclimatizing themselves to the other culture and all of a sudden they go back to their own. by some people when they return home after a number of years overseas.