It was really tempting to vote for "Carla" who appears to have such a lovely countenance as demonstrated by her self control to avoid outright snarling at the camera, but in the end I decided to stick with my river siblings and help your sister out. I hope she gets the boots!
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse