There hasn’t been a trial yet. Good luck in trying to get a conviction.
Assuming there isn’t a plea or offer to the jury of a lesser chanrge and if all the info is admitted as evidence, you could see jury nullification as the out. That should be played up in the media by the stepfather’s attorney so that at least one person gets on the jury knowing they can disregard instructions and the letter of the law and find him innocent or only convict him of some misdemeanor.