If your dog is having a true seizure, there's nothing you can do to calm her. A seizure is a misfire of electric stimulation in the brain, keep your dog safe and away from furniture or anything she could potentially hit while having a seizure. Best thing to do would be to take your dog to the vet, explain what happened and what your dog is doing since. It would be helpful to the vet to take a video of her when she has her seizures so the vet can see. The vet can prescribe medications to help your dog be seizure free. Good luck, hope this helped.
Help! My dog has been having these seizure for months. They all started after she was attacked by three pit bulls. What do I do when she has a seizure again? How can I calm her?
The vet can give you meds for that. The owners of the dogs that attacked yours should be paying your vet bills.