This seems to be a need to properly control your daughter's epilepsy. Compulsory treatment is not an option as she is not medically incompetant.
Your first port of call should be to sit down with her GP and discuss referral to a neurologist. The aim is to optimise and monitor drug therapy to reduce the number of fits. It may also includse other teests to identify possible causes or triggers.
There really is no reason why the NHS cannot provide this. You may also find the National Epilepsy Cente of valus in providing information and support
www.epilepsynse.org.uk
Most epileptics can be helped. Do not despair