@caron7 - here is some information Mayo Clinic has online that might offer something relevant to your question about whether there is a genetic factor in your seizures and your grandaughter's. See especially the subheading labelled "Causes":

- Epilepsy https://www.mayoclinic.org/diseases-conditions/epilepsy/symptoms-causes/syc-20350093

Please note especially this part, "Genetic influence. Some types of epilepsy run in families. In these instances, it's likely that there's a genetic influence. Researchers have linked some types of epilepsy to specific genes. But some people have genetic epilepsy that isn't hereditary. Genetic changes can occur in a child without being passed down from a parent.

For most people, genes are only part of the cause of epilepsy. Certain genes may make a person more sensitive to environmental conditions that trigger seizures."