She's just being Miley!

A 12-year-old girl from Florida was listening to one of Cyrus´ songs when she started having epileptic seizures. Upon treatment, Dr. Paul R. Carney discovered the girl had problems with baritone-type sounds such as dog barking.

Carney relates the seizure by saying "It´s like abnormal feedback off a microphone." Sometimes the human brain can have "glitches" in the system and pitches like the ones in one of Cyrus´ songs can trigger them.

This is why your father shouldn't have made a deal with the Devil for Achy Breaky Hearty success.  It also proves that Miley Cyrus is a demon and should be burned.
 

Burn the Witch!