More than just unmoving performance
A short description:
Louise is a fine personality caught in an inflexible body. She doesn't speak but gestures with minimal movements plays with situational comic and keeps her calm. She has her own special character: on the one hand she is easily hurt on the other hand she is decisive, knows what she wants and gets it.
Her character is thought through. Sometimes she acts standing still other times she leaves her fixed position. Louise moves through space ,gestures with people and returns to her position. This minimalism impresses and fascinates the audience. Louise creates suspense amongst the audience and doesn't need to do much. She's simply fascinating. Her character shines through by standing.