What she does is provide a very good outlet for pressured any trapping, and she is surprisingly nimble when she wants to be and really quick and strong when she posts up - she conserves energy most of the time and barely moves, but creates a huge screen for anyone to get around. And if you watch, that shot is very quick. There are a number of clips where the defender is three feet away and assumes they are ready, and the shot is gone before they can react. She is certainly not going to go around her defender, but defenders tend to sag off a little to provide help and can't get back in time.
Really is a unique and smart and skilled player, just not what people normally think of skills.