The motivation for sacrifice is to perpetuate, intensify, or reestablish a connection between the human and the divine. It is often intended to gain the favor of the god or to placate divine wrath.
"A. My new brother in law is also my son's art teacher" contains an error. "Brother-in-law", like Maid-of-honor should have two hyphens in it--on either side of the word "in".