homeopathic for dog injury

My dog tore her doggy ACL in her knee a few months ago, she could barley walk on it at the time. now a few month later with leash walking and some therapy her limp is better but she is still lame in that leg. the vet has scheduled surgery saying she will never live a normal life without it. she is one and half years old. I have tired ruta and rhus tox 30c. then I was told by a homeopathic that animals need higher doses so she recommended 200c to use on my pets. so I tried ruta 200c for a week. that didn't seem to change anything, now I wanted to try rhus tox but I am nervous about using 200c.any advice? surgery is next week. I also was given a homeopathic surgery recovery protocol that uses, phos 200c arnica 200c hypericum 200c and staphysagria 200c. Thank you in a advance, she is better from minimal light exercise if she does to much her limping is much worse.