Cats

My cat Pepper has always been a sweet thing!
But what is it with the stretching on corners?
She has and uses her cardboard scratching thing. Then she stops in door ways, or the kitchen corner, or the window mullion, stretching up. She doesn't sink her claws in, just stretching.
Why not stretch against the flat wall? Would she loose her balance and fall? Does she need the 90' to angle her paws?
Deep questions to which we must find the answers.