If the State really wanted to go high and right, they could charge the daughter with production of child pornography and the father with possession, if he's the legal owner of the smart phone that contained the photos.
The boyfriend is most likely off the hook though for statutory rape charges.
That certainly would not be high and right, but rather low and left(ist).If the boyfriend is of majority are, he alone holds the mantle of responsibility. The girl, a minor, cannot be held responsible for his actions, the father certainly has both legal and moral right and power over his minor child and his property.