I'll chime in with my two cents. I've only seen the one side angle and the (to me) damaging photos from the family lawyer. From his photos you can clearly see the distance from the rail to the window. If you go back to the video, if the child was sat on the railing, it would seem we would have been able to see her. Following that line of thought, she had to be extended past the railing to be not show up on the camera.
I don't know what other camera angles caught, but there are cameras on the outside that can catch people jumping or throwing things overboard. So there has to be more