“SNL” writer Jimmy Fowlie revealed his sister Christina Lynn Downer is “no longer alive” four months after she went missing . “The LAPD has informed our family that Christina is no longer alive, and the case has officially transitioned from a missing person to a homicide investigation,” Fowlie shared via Instagram in a Wednesday update. “Our prayers for her to be found safely have transformed into prayers for the truth to be revealed and for those responsible to be held accountable.” “SNL” writer Jimmy Fowlie revealed his sister Christina Lynn Downer (pictured above in pink posing alongside Fowlie) “is no longer alive” four months after she went missing. Instagram/Jimmy Fowlie Fowlie informed his followers in a Wednesday Instagram post (pictured above) that missing persons case into his sister’s disappearance has now turned into a homicide investigation.…