I believe that this song is having a sixth sense and all the spirits are messing with her head because she is new at all of this. For example, "Speaking to the atmosphere" is a reference to talking to something that others can't see in which case clairvoyance would be involved. "Fallen angels at my feet" since clairvoyance attracts spirits this could be referencing to demons that have made themselves known. "Whispered voices at my ear Death before my eyes" Spirits like to get right next to you and start talking, and death before my eyes could mean the spirits seen right in front of her. And lastly, "I know I can stop the pain, if I will it all away" is true for clairvoyance, if you don't want it and just will for the ability not to be there then eventually the ability and all that comes with it will go away. :)