I've had to hold them up with the tractor and slings. I would give her a few days to stand on her own and then start lifting. Raise her up to where her feet are barely touching the ground. Do this at least twice a day and more often if you have the time. Slowly increase the time she is in the sling and slowly increase pressure on her legs. She should get to a point where you can slack off completely and she will continue to stand. This can take a few days to a few weeks. I wish you the best of luck.
Jim
