shyannes surgery

I have a 9 month maltese yorkie poodle, shes been holding her back leg up for about 3 weeks now on an off took her to her vet and found out she has a Luxating patella which is where the knee pops out of place do to a shallow bone, they tried a inflammatory medication to see if that would help and it did while she was on it but now that shes off of it its back to the same issue the only other thing the vet said they can do is surgery which will cost 2300 dollars and i honestly can't afford it so any help would be greatly appreciated