I need some help please.

I have a ten-year-old female Chihuahua mix named Precious, that is totally terrified of thunderstorms. Her fear is so severe that she has panic attacks. So far, we have tried the Thundershirt, however, it doesn't seem to work for her. We also live in a trailer house.

I am on a very fixed income and cannot afford to take her to a vet for this issue.

Can any one give me any advice on what I can possibly do to help her please?

Thanks!