There's at least one more video with Jack and Jill aside from the "1st threesome" video posted on the first page of this thread.
This is the highest quality longest version of it i can find, it's definitely incomplete and cuts off the first portion. I've seen short clips of the first portion of this video. In those clips she is wearing a grey shirt and shorts, turquoise underwear, and her hair is tied back in a braid. At some point in the video she puts on a collar which she is wearing in the portion included in the link. The earlier part of the video also includes a massage and sex on a leather bench.
bunkr.fi