May I ask what you feed her?
How many seizures a day was she having before being put on meds?
Have you considered this could be food allergies or environmental allergies? Many things in your own home can cause seizures.
When did the seizures start?
Is she spayed? Hormone fluxuations can cause seizures.
Have you seen this website:
Canine epilepsy and diseases that cause seizures in dogs
It's a terrific website with tons of information...maybe there is something that that will help you and Daisy. You can also email them through the website and they do answer...good luck.