Loud, But Not Always
Reading your stories that you have posted I noticed that none mention anyone trying something that is real easy to do.
Taking earplugs and inserting them into one's ear can change his or hers diagnosis on hearing voices.
If it isn't as loud then it can't be inside their heads, common sense tells us that.
Suggesting that doesn't happen by you, did you fail to do so because it may scare some or some other reason?