I'm surprised she still has her teeth, as far as that stock was from her face. I'm all for people shooting big guns, but as the pragmatic wet-blanket in the crowd I would suggest that unless you plan on trimming the stock for her and getting her stance sorted out, you would be best served by leaving this trip out as a one-off. I know I'm being a downer, but that's too much LOP and too much weight for her (or any other similarly sized and structured shooter) which is why her front foot came off the ground (or, she must have had it off the ground by the end of that recoil). Half the time when you do something like that it results in the shooter falling over or losing their grip on the rifle, neither of which is a good situation. She's half-way lost control with her right hand, her eyes are clamped shut against the recoil...I just can't find much good to say about the whole situation (I mean, she only hit the target once out of 4 times) other than I'm glad she went shooting with you and I assume she enjoys it, which is awesome.
I know...if you're going to be a cranky old stick-in-the-mud you should just shut the #### up and let others have their fun. But when that fun runs the risk of pushing people away from the shooting sports, I get touchy even though I shouldn't.
Now that I think about it, in an attempt to end my Debbie-Downer post on a somewhat positive note, maybe invest in a set of shooting sticks, traditionally used in Africa. You can get wood or metal and they run the gamut in prices but they would allow her to support the rifle better and fix her stance to better soak up the recoil (though she doesn't look very "recoil-soakingly dimensioned as opposed to people like me) and allow her to land more accurate shots. Similar accuracy to shooting off the bench but far more manageable when dealing with a hard-kicker, especially where the rifle it too long for her.
All in all, I'm glad you got out for a day of shooting with the missus (even if I kinda #### all over it). Getting out and doing stuff together, especially shooting... the real victory here.