Hey there "real autist" … notice that when she turns away, he's plainly holding her. Moreover, he does not alter his pace, thus applying pressure on her right arm.
If you are an autist, look at what is actually in the photo … the totality of the body postures say that she is bound at the wrists and cannot move freely and that he is forcing her in the direction he wants her to go. She is turning an stumbling. He is not adjusting his posture to account for her comfort.