Atheists: Do people that speak in tongues need mental help?

At the church I used to go to (atheist now) usually this one lazy would give a "message" in the end of a song on random Sundays, usually something generic like "I will help you through your trials, have faith in me blah blah blah", and she did that usually every couple Sundays or so. So does she have Schizophrenia or some sort of disorder that makes her hear what she thinks in God? Or is she just into it and she just unconsciously comes up with a "message" that she thinks is legitimate or is she just a faker? And what about people that speak in tongues and the people that "translate" it? Are they all mentally unstable or something?