Pearlsacarolsinger
Up in the clouds
Yes the vet has seen her.
Then it sounds to me as if you and the horse have been let down by the vet, who should have checked her knees before prescribing further (minimal) amounts of bute. If you want to keep riding and a good equine vet thinks it would be beneficial, as well as regular bute, you could try magnetic leg wraps, I have known horses respond very well to them, while I have also known others whom they have made no difference to at all.