Sophia actively participated in the traumatic drugging of her sister, Carol, on the night of Carol's twenty-third birthday party. Driven by greed and a desire to secure wealthy matches for her family, Sophia's actions directly led to Carol fleeing the family entirely.
She ultimately secured a wealthy husband of her own and raised her daughter, Chelsea, to employ the same deceptive tactics. Sophia continues to collude with Matt's stepmother, Claire, to force a marriage between Matt and Chelsea.