(NEWSER) – One reason it took the women in theCleveland kidnapping case so long to escape to the world just outside their door? Ariel Castro would "test" them for just such a scenario, reports CNN. According to a law enforcement source, he would pretend to leave the house then return suddenly to check if any of the women had moved, punishing them if they had. Even though the women watched the search efforts and vigils held for them on TV, they eventually "succumbed [to] their reality," says the source. Additionally, Berry's child, Jocelyn, was not told Michelle Knight's or Gina DeJesus' real names, in case she mentioned them when Castro took her out of the house,WKYC reports. Castro, the New York Times adds, would serve the women cake each year—not to mark their birthdays, but rather the date of their abductions.