I took her to the vets last night to have the bandage removed for good (I was worried about doing it myself), and we felt the leg after bandage was off, and there was movement again where it had healed!
The vet needed to see what was going on, so she did an X-ray, to find that the leg had healed wrong (it wasn't straight) and there was an over lap making the whole leg shorter than the other 3. At the place it was broken, there was a huge callas which you can feel. (Sorry I don't know any of the technical words)
There's no more the vet can do, the goat will never use that leg again but she said it will be happy living on 3 legs. If there are any problems, or it looks like it's in pain, then I will need to have her PTS.
It's not a great end, but I still have her, and the vets have been very helpful and done all they can,