Sorry to hear about your cherished hoya!
I also love hoyas and would feel the same way you do if that happened! I also have a couple felines!
If the roots, or root-ball is not damaged, try putting it back in the same pot, or a smaller one if need be, giving just enough room for the roots, (about an inch growing
room between the roots and inside of the pot) Water it in a little giving it the same light.
As long as the roots are ok, you should get some new growth, but it might take a while. Just don't feed it, or over-water it now because there are no leaves and the roots can easily rot.
Hopefully in time, it will grow again.You might also want to take a few cuttings and root some in water and some in soil in a small pot.