Since she and her group of Satanists believe in Satan and the power of Satan/Lucifer and ended their plea with Hail Satan,  their group presumably must believe in God since God put Lucifer in the very place this group of misfits are calling for Satan to rise from.    The fallen Angel Lucifer already lost the coup, the battle, the civil war.   Satan does exist.  Satan exists in Iris Fontana's heart, mind, and soul.  Ironic that protestors who demanded Free Speech for themselves protested against the Catholic's right to express their beliefs.