(((Charmed))),
I am so glad that you found us, but so sorry for why you are here (((hugs))). Have you talked to the vet about other options aside from steroids, or can you go to something else in the off months that she can't be on steroids? Is she in pain? What does the vet think? Could she move around better if she had a cart to carry her back legs for her (like a wheel chair for dogs)? I am sure that you have thought of these things, but I remember when my dog ^Cody^ became ill I couldn't even remember my name at times. I am sorry that your chow is not well. We worry so much about our furkids and if we are making the right choices for them.
I wish that I could tell you what to do, but you know your dog better than anyone. I think that you will know when the time is right and your pup will help you with that too, along with your vet. You sound like a terrific furmom and no matter what decision you make, I am sure the decision will be made out of love and what is in her best interest. Please let us know what you decide to do. We are here for you to listen and to support you.
(((Hugs))),