Epilepsy can occur even with a normal MRI, and since your wife is still having monthly seizures despite Eptoin, her treatment likely needs review. A neurologist may change or add other anti-seizure medicines (like levetiracetam, valproate, or lamotrigine) based on her condition and may advise tests like an EEG. It is important she takes medicines regularly, avoids missing doses, gets good sleep, and avoids triggers. If seizures are still not controlled, options like combination therapy or other advanced treatments may be considered. Please consult a neurologist and do not change medicines on your own.