I don't have dogs, I have cats..My little Ebonie began having seizures and it was finally traced to a med she had to be on following a mauling by 2 daschunds that were off leash and in MY garage mauling my cat...she lived for 4 years BUT had non stop complications that surfaced from time to time from the surgeries. She was put on Baytril ( sp) and two of the RARE side effects were sudden blindness or seizures.
I agree with the suggestions to see about the triggers for the seizures and also study up on the meds she may be taking for side effects or rare side effects. Hope all works out for you.