She would have to have some evidence that her injury was in fact caused during her fall at the jail. That can be tricky, as it is not uncommon for people who wish to sue the police to claim to be injured in a jail when in fact they were injured prior to arrest. The fact that she was a pain pill addict complicates the picture a bit, as the police may have been skeptical that her demand for a doctor was truly about an injury as opposed to her wanting to get some more pain pills.

You also don't indicate a timeframe, so there may be a statute of limitations problem. Also, it obviously is not the case that she has been denied medical treatment in prison, as she is still in prison and is receiving medical treatment. Further, it isn't clear what damages she has, beyond having to undergo surgery to repair the fracture, whether she would hav required surgery to repair the fracture if initially given appropriate treatment, and how the delay might affect her long-term recovery.

I don't want to sound like I'm minimizing your friend's plight, and denial of proper medical care can be a real issue in our nation's jails and prisons. Realistically, your friend needs to get a consultation with a civil rights lawyer in Ohio, and have her case evaluated in detail.