A novel 3 point "try for goal" preliminary mechanic?

[Kansas Ref]

Recently worked in what the sponsors called an "Exposure tournament" for rising HS seniors to display their skills to "interested parties"; the refs were from different regions. When marking a 3 point try for goal, I observed one of my partners to consistently do the following: use the normal raised one arm at approximately 90 degree angle with fingers of three; however, the other arm was placed diagonally across her chest with the palm coming to rest in a "pledge of allegiance" fashion!

The consistency with which she displayed this rather elegant pose when marking the 3 point try indicated to me that this was a common practice from wherever she was from; or a preferred practice of her's, or maybe it has a functional role.

Anyone else seen this mechanic, and, is it kosher?

Thanks.