That's good to hear thank you. The vet seemed to think similar, no reason for the seizures not to completely go away with the right medication.
My main concern, other than the health of our cat, is how to reliably give her medication twice a day, 30 mins before eating, and without the other cat interfering. Although they do get fed twice a day, our lifestyle at the moment doesn't mean that we are at home every weekend or can stick to a regular 12hr feeding schedule. At the moment we can leave them with the automatic feeders when we're away for a few nights, but the new routine would complicate things somewhat.
I hope that we can find a reliable person in the village to take care of them when we're away for longer or more predictable periods.