How Long Will Seizures Take To Be Completed Cured?

sir,my sister is 15 yrs old . She is suffering from partial seizure/complex partial seizure as per eeg report from 2 months .Its symptoms are headache,partial unconciousness,breathing problem,body pain ,weakness.She is taking valparin chrono 300 and lonazep md 0.25 as her medicine.Sir is the medicine given to her correct and how much time it will take to get fuuly cured? It is happening to her daily. Is it dangerous?