As someone else said already in here (bababui, I think), she'll move and contort as if she's having a seizure, and strategically place her hands so you'll only see 15% of her pussy for a grand total of 0.5 seconds for 98% of the duration of the video.
The pool video where she shows her pussy and asshole in full view was a fucking glitch in the matrix it seems.
(I will admit tho, she looks stunning in that preview, crazy how much better she looks when not trying to pull off the weirdest fucking angles and with awful filters)