Oh my!

My dog had a seizure, saturday morning and my wife was crying and holding her and told me to call the vet which I did and we took her right in.  I was kinda glad it happened while she was here because it happened with me alone about a week ago and when I described it to my wife I don't think she blieved how bad it really was.
The vet ran all kinds of tests and said it must be epilepsy so I said how do u know its not something else like a brain tumor and he said, well you would have to take her somewhere else to get a ct scan. 
So he gave us seizure medication, valium, paid him over $300 which cleaned out our savings, took her home and she had 2 more seizures during the night, one at 1 am and the other at 5 am.  Frustrated, my wife vowed to call the vet back and tell him the valum isn't working. I looked online and ct scans on animals can cost up to $1000.  We cannot afford that. 
Needless to say I didn't run yesterday and I don't dare go run today until my wife gets home from work but by then she may want to do something else. Plus, I am drained emotionally having been awake for a portion of the night so I don't even feel motivated.
Hopefully, she can get through today without another seizure and I can hit the road and do what I love doing.
Please pray for us....Thanks!