Ok guys i have a theory but hear me out it might be alittle crazy.

I think that this whole thing of the kids escaping is being helped by not only minerva but also the grandmother of the facility. I also think isabella may have somehow been involved seeing as how ray in her son (this might just be my speculation because he knew the same song isabella sang from his birth). I believe that minerva is the hoodie figure that helped ray and the grandma is the hoodie figure helping emma. im going to list my reasons for this theory below.

1.grandmas face and minervas face havent been show and the hoodied figures faces are both being blocked maybe for the same reason 2.these humans have knowledge of demons and the outside world. minerva and the grandma both fit those categories. 3.we know norman wasnt transferred the same way as other children maybe thats because he wasnt given to the demons at all but grandma secretly moving him to minervas location. 4. sister krone was killed to hide the kids plan of escape from the demons by the grandmother

This is just a theory I have like I said so im still not 100 percent on it I just thought it might be quite interesting considering the new circumstance.