it's the picture he sent with his(?) son in it that is the crime he's being investigated forYou are very unlikely to get much of sentence for dirty talk with a 15-year-old-girl. Those who are not famous, or wanted by the police for some other reason, can usually plead to a misdemeanor and get probation. They’ll tell the man not to do it again, tell the girl to find a boyfriend her own age, and that’s that.
it's the picture he sent with his(?) son in it that is the crime he's being investigated forWe don’t know that he didn’t do more much worse. If he sent lewd photos to an underage girl that will be serious jail time.