There are a couple of avenues to consider in dealing with this man.
The first is that the man is likely committing the crime of extortion
against your daughter. It is generally considered a crime to ask a person for money in exchange for not exposing something that is embarrassing or humiliating to the person. If this man is in Ohio, as you mentioned, he would be in violation Ohio Revised Code § 2905.11
, which provides as follows:§ 2905.11 Extortion
(A) No person, with purpose to obtain any valuable thing or valuable benefit or to induce another to do an unlawful act, shall do any of the following:
(5) Expose or threaten to expose any matter tending to subject any person to hatred, contempt, or ridicule, or to damage any person’s personal or business repute, or to impair any person’s credit.
Second, if the photographs of your daughter were taken when she was under the age of 18, the man could also be charged with a variety of crimes involving child pornography. For instance Ohio Revised Code § 2907.31, makes it a crime for anyone to disseminate child pornography.
So, one of things that you can consider is that you can threaten him that if he continues with his threats of asking for payment, or if he disseminates the photos you will pursue criminal charges against him. You can do this yourself, but preferably you should have an attorney from Ohio contact him and say that if he does not immediately cease and desist, and return all photos to your daughter, you will seek criminal charges against him. People take things much more seriously if they are contacted by an attorney. You can contact the Ohio bar association for a quick referral since time is of the essence. This will likely get him to stop.
Third is that since you daughter was a minor at the time, she would have no obligation to pay him. The contracts
of a minor can be voided by a minor.
I'm sorry that you daughter is going through this. Try finding an attorney in Ohio to contact him quickly to put pressure on him to stop.