I would use a chart to time when the seizures come. Morning, night, in between.? What had she been doing just before? Call the vet, who will look at the chart and decide if she needs meds. How long do they last,(remember the after minutes when she is recovering; include that) does she lose control of her bladder/bowels? As much info you can give the vet, the easier it will be for them to decide whether or not to medicate.
I have a chi with focal epilepsy who has been on phenobarbital, and potassium bromide for years. Other than some weight gain, and one abnormal liver enzeme on the blood panel she has no problems.