Because I don't know if you teasing or serious.......Pronation is the "result" of internally rotating the forearm...
And in the first video, that's what she's doing. Yes, there is some internal rotation of the shoulder, but not much. She starts to internally rotate, then externally rotates to HE. Personally, it's not a clip I would use to show internal rotation.
The 2nd video, most of the arm movement is hidden after release, but I'd say she's internally rotating the shoulder.