I never thought I could experience this much joy simply from seeing someone bend her knee. But I tear up every time I see it. 

The hard work appears to be paying off. We've achieved what I'm estimating to be a 70-degree angle or so. Better yet, B can get there herself—she doesn't need us to bend it that far. We've been working at holding the bend for lengthier periods of time. So far, so good. This is by far the most hope we've had in a month.