For at least one month we will enjoy the use of this device at home.
After a trial of about 15 minutes at school, C. progressed from totally locked knees to slightly locked ones. For her that's actually encouraging.
Not what we were hoping for but not as bad as it could have been. (Well, the knees could have remained totally locked, couldn't they?)
The Hart Walker staff informed us that C. is a guinea pig; they have never before introduced a child as old as her to the device.
Here's hoping we make Hart Walker history.