I am the only one in my immediate family with ep. A maternal cousin had ep as a kid but hers disappeared as she got older. My ep is due to having meningitis as an infant.
I have heard that ep is known to skip generations but that is not saying that is a 100% chance for that "skipped generation" to develop ep. The chances are simply higher but not guaranteed.
Epilepsy takes on many forms. Don't let the type of seizure that your fiancees' mom has limit your familiarity of what a seizure is.
Think about talking with your doctor about this concern. Maybe your future mother-in-law can provide some insight or resources for you too. You might want to check out a local epilepsy foundation for additional inform.
In addition to Candi's thoughts/suggestions, I would like to add Amazon as another place to start looking for info about epilepsy.
We all had a lot to learn during the early days. We are still learning cause new info is always being released. We will never know it all but having handy references can be a plus.
Please start that journal and keep it close at hand whenever possible. Questons or concerns pop up all the time.
My story is also available to read. I guess you know that I'm in the head garb. The girl before is Dana(clarinet2) who had her lobectomy (brain surgery that removed problem area) about 4 months prior to mine.
Keep us posted on how you're doing. It is okay to feel fear. It is never okay to not discuss/share your concerns.