1/14,000 - 90mm F2
Can't say I see rolling shutter effect
While slight, your image still shows rolling shutter effect. Unless you have performed some rectilinear correction to the final image, in the vertical direction the tiles are perfectly vertical, while in the horizontal direction they have lost their orthogonality because of your hand-held motion (the sensor is read top-bottom, which in your tilted image corresponds to the left-right direction). The kid's rolling shutter is then the sum of camera movement plus its own jump speed:
The truth is that the final image is perfectly correct because both movements (your hand and the kid) were still slow enough not to display agressive distortion.
Regards