Oh. the story isn't very well developed and doesn't make sense beyond the horror aspect because it came out as a game first.
i found it intriguing at the start but after the priest section, it lost its allure because it made zero sense. i thought she might be schizo as a possible explanation but no, there is no real meaning revealed by the end of the 12th episode.
I gave it a 7 because it was decently good up until that section and supposedly there's four more episodes which could tie the story up nicely. otherwise, it would probably be 6.5.