There's no real source, but as usual Baby causes a spot on the wall to brighten slightly in time with her voice. Humans, she has found, feel more comfortable talking to her when they have a visual focal point.

"No. I have been observing Andrew Wells closely since his incarceration, and his sleep patterns are well within normal parameters for a healthy adult human. I am unable to determine whether or not he is experiencing bad dreams, but if so, they are not substantially affecting his ability to sleep."