Hi, my dog is a 14 year old Samoyed and last week she had a fall on a 4's. Since then she is unable to put weight on her back left leg. That leg also has a pressure sore on it which has been treated by the vet for the past 5 weeks. She is doing her business in the house now, is very restless and seems to have a touch of nerves, and also suffers with arthritis. She was at the vet last Wednesday but has not improved since then. She can only walk if I support her with a towel around her hind quarters. What else can I do for her? Is it time to say goodbye?