Scott Hassler watches this pair warm up, encouraging them to build on the ride they had the previous day.  He suggests a shoulder fore past a spooky spot in the trot work and asks the rider to remember to keep the mare light footed in the canter.  After watching the warm up Scott talks about the difference between collecting and getting slower and how it affects the back. He offers that working in short sets where she can be successful followed by a short break will lead be a more effective strategy in the mare training.