epilepsy

my daughter started having seizure sine when she was 13 (start of her puberty with period) docs put her on 100mg lamictal for over 4 years. then eeg was done on her and result was that she is normal and she can quit taking medicine. but soon after quiting seizures came back. so she is back on lamictal 100mg. till last thanksgiving she has another seizure and another in dec. so docs doubled her dose to 200 mg. but she got 4 seizures after doubling the does. what is your recommendations please.
thanks in advance.