Answer: boomerang generation
Explanation: The term boomerang generation is a label used to describe young adults such as in the case of Christina described above who finds themselves sharing or living under the same roof with their parents after having left initially. The cause ranges from the high cost of associated with getting and apartment or other social imbalance such as job loss which is the case with Christina causing these set of individuals who seem to have attained independence and thus set out to live separately, only for them to rush back under their parent's roof.