J.Y.
How many and what type of seizures has she had? My 8 year old daughter has had a few grand mal seizures in the last year or so and we have opted thus far not to use medication. We are just very careful with her. Since she is so young, admittedly it is easier to monitor her around water, heights etc than it would be for a 16 year old. (We also home school which she absolutely loves but she is very active with other social things so it's not like she's sheltered from life at all).
There is a cousin in our family who has severe epilepsy who has had operations, and serious medication all of his life since his is so severe but his mother recommended to us not to use medication right away as so many kids have a few and then no more.I guess that wouldn't be possible if she was having them more regularly. Is it at all possible not to use the medication? Also there are several different types of medication and apparently some are not as severe with side effects as the one that is most common (is it phenybarbitol?)I think Keflex was the one my cousin's mother recommended if we must go that route. Our pediatric neurologist told us that it is more common for teenagers to get them for awhile and then for them to stop. He said my daughter's age was uncommon to start like this but it is more common in teenagers.They don't really know why but it could be because they are growing and changing and sometimes it goes too fast for the brain or something like that.
Good luck with it all. I know how scary it is. I hope she stops having them really soon or that you find a better solution with medication.