DD has been working on conditioning Nutmeg slowly, she isn't exactly what I would call in shape, haha!  
He has been working on getting Nutmeg moving with Jack. She'd keep up, but her stride is shorter than his, so she'd  fall behind and to catch up she'd get ahead of him.
With a bit of work he was able to have a nice clean run with her along the fence line with Jack.
Once she can do this well she should be balanced enough to have a saddle and rider, which she should be able to do sometime next week.

3 pictures but the poor camera was running out of juice.
Or they were going so fast (vroom) that the camera couldn't pick them up. ;)