I'm right handed and my right eye is a lazy eye so my right hand is my strong pistol hand but I use my left eye. I shoot long guns left handed. I practice weak hand and weak eye shooting also. Could be she is left eye dominant and right handed too, as others have suggested. She could have held her trigger finger in a better position though.
That is exactly my situation, I have to close my right eye and get my sight picture with my "good" left eye, so my head is cocked as in the picture. Probably not the best situation but it works for me.
I also have shot rifle left handed ever since my BB gun days, that is why my first shotgun was an Ithaca 37 because my Dad's model 12 ejected shells into my arm.
I should try weak hand with a pistol, as I am somewhat ambidextrious.
Depserv, I have found there are a lot of us out there with the same issue.
Greg58