Help Get Grace running again!!

Grace is a sad girl.  She has ruptured her right ACL. When the vet at Auburn saw her last January, he said 60-75% of dogs that rupture one ACL will rupture the second.  We had the recommended TPLO surgery in January and did everything possible to keep the other one from going.  Now, to be able to run again without pain Grace needs to another TPLO surgery.  Unfortunately right now I don't have the $2800.00 to spare.  If we leave it, Grace will be three legged and will have severe arthritis in her later years.  She is only 4 years old now, so that will be a long time not being able to be the hunter she loves to be.