my grandparents cat is a farm cat. they won't want to waste money on her. Is there anything you know that would help with fleas that you can get at a store?
I had the same problem with my cat, and there are a few different things that can cause it. The most common is parasites and/or fleas. I would lean towards that since you have a new cat. Thyroid problems can also cause it. Old age can cause it as well. Your vet can take a look and a skin scraping to determine if it's fleas or a parasite.