Do you think if I took her to court, would she have to pay some or even a little of the vet bill?

My family and I adopted a 5 month old Siberian husky from a lady that contacted me thru craigslist. We texted for a bit and she told me the dog was a healthy dog. We drove an hour away to get her and when we got there, the woman told us she has a scratch in her eye from playing with the other dogs and gave us cream for it. She then told her mother died giving birth because she was sick with worms and because of that we could not breed the dog. The last thing she gave us was a vet form stating she was cured of worms. After about 2 weeks, the scratch that was near her eye spread to her whole left half of her face, and she was constantly itching. We brought her to the vet and got her checked out. It turns out the scratch in her eye isn’t a scratch. It’s red and irritated and has a hard time opening it because her eyelid is growing in the wrong way. Next month when we bring her to get fixed, she has to have surgery to fix it or she could lose her vision. The cream the lady gave us was the same cream the vet gave me. The scratch near her eye that spread through the whole side of her face is demodectic mange, which is hereditary, and if left untreated, it would enter the blood stream and is deadly which makes me think about the dog’s mother, and why we can’t bread her. Not that I was going to but sounds fishy. She also has ear mites and hook worm. Her vet bill just to get all that diagnosed and her medicines were $420.00. Keep in mind, that’s not including the cost to bring her back every 3 weeks to have her skin checked for mange again. Her poop was checked again in a month, her surgery on her eye, and to get her fixed. What should I do?