The Frame: 17290885SF or (5SE)
Alice's Legs: on the video, I point out the "52" to the left of alice's left leg, in the sand. I know see that it's "252" There's could be a word written in the sand before the 3 digit number.
On Her left Calf:
M(partially hidden above the X, under skirt), so MX14 and the Right Leg S (5?) 47.
So that's SS47 or S547 unless all S's are 5's.
I have a feeling someone will figure this set of numbers out.