The Indiana doctor who performed an abortion for a 10-year-old girl who crossed state lines after being raped is now being investigated by the state’s attorney general, the AG’s office confirmed Wednesday. “As the Attorney General, I’m duty-bound to investigate issues brought to my attention over which I have authority, especially when they involve children,” Indiana Attorney General Todd Rokita told the Daily News in a statement through his office. “And as I said originally, we will see this duty through to verify that all of the relevant reporting and privacy laws were followed by all releva…