Screen video part 2

[Ref in PA]

I have viewed this video many times also, pausing it when I think the feet yellow 14 are set. I then look at the position of blue 40 and her feet at that point. In every case where I pause, B40 is in the middle of her step and when she finishes that step, the contact occurs. Originally, I thought this was a no call. The more I think about it, I am inclined to call an illegal screen. I do not think B40 had time or distance to react to the blind screen and the contact cause an advantage for the offense.