I would not be able to promise the parents the proper supervision to make sure the child does not seizure during her sleep. When the children are napping, I have a baby monitor on, but if a child seizures and stops breathing, I would imagine there might not be any noise to alert me. I use the children's nap time to have my lunch, clean up their lunch etc., and I would not promise to be in the same room as the napping children for the entire naptime. If I were a parent and this happened to my child, I would not be comfortable leaving my child with anyone until the seizures had been brought under control with medication.