A lot of questions unanswered....**SPOIL ERS**

Now that I've known that a line was uttered regarding not listening to them 3, then I believe all rituals he was trying to do did work on him. Also another conversation he had with himself saying that the static were the Angels themselves trying to let Michael not hear the actual demon voices inhabiting him, so at least it was explained why there were a lot of jarring music in this movie. Also I believe that such noise, especially in the cemetery and the doctor's office, were ever loudly, as said Angels were really trying to let Michael not acknowledge the demons but he only realized this at the end when he was already talking and understanding them.

I would certainly say it was the demonoologists. Even if they didn't take it seriously didn't mean it wasn't real. That was kind of a theme of this movie since he wasn't taking any of it seriously and look what happened.

I would normally say it didn't go further than what we saw but we know she takes sleeping pills and given that she slept through that much anything could've happened.

I would guess she was trying to warn him not to be messing with that stuff.