115 isn't heavy for her yet. I would not switch her to five sets of three at this point, either. Her correct starting position will be more like the second rep. On her first rep, she looks like she starts a little too close to the bar, putting her shoulders too far in front of the bar and leaving her hips too high. She may have the bar a little ahead of the midfoot on two and three, but not by much and I really cannot tell from the angle provided. I feel like a broken record here, but the sticky covers how to shoot videos correctly. Compare your video with this dude's video:
http://startingstrength.com/resource...ad.php?t=53697
Having the camera set lower and at an angle slightly to the front, but still mostly a side shot makes critiquing deads A LOT easier. However, we did get to see that guy doing one handed barbell tosses on the landmine setup. That is something, I suppose.