Other mistake: The animation of the video player is a static image since the graphics don't move, and since it's a live stream it shouldn't have the pointer at half of the screen in the first place. (00:21:50)
Other mistake: The birth dates of the sisters have been switched as Rollins looks on her laptop. (00:10:30)
Answer: It was a misconception about Jehovah's Witnesses beliefs. Only blood transfusions are discouraged in their beliefs, medically.