Summer has not been ridden for two years. She will need to be ridden to evaulate the current state of her training and to see how much retraining she will require

Summer was trained to:
solid walk/trot/canter (under a hunt saddle) - transitions
   in 1-3 strides of being cued
back up easily/freely
lateral movements - changes direction with leg pressure only
lead with a leadrope 'wrapped' into a makeshift halter
stand quietly to have his hooves trimmed
stand quietly to be groomed
generally show good ground manners