Slipped Disc in Pets?

This Saturday morning, my dog (black lab/beagle mix; roughly 45lbs – average weight) was having trouble walking. My mom and aunt took her to the vet, and the vet said that she had a slipped/herniated disc in her neck. The vet gave her a steroid shot and explained that she is a candidate for surgery, which is roughly $3,000. That’s out the the question. The vet told us that another possible and rather effective treatment was steroids and a muscle relaxer, given daily. The vet said she should show improvement over the weekend. It is now Sunday evening and Lucky has shown no signs of improvement, if anything, has gotten worse. She is paralyzed in a sense that she can no longer move her hind legs, and lays in her bed all day. To take her to the bathroom we have to carry her outside and have one person hold her up with a towel, while the other moves her tail etc. It doesn’t look like she is ever going to get better. Has anyone ever had a pet that was had this happen to them, and, have they recovered? What was the outcome?