That one there makes me think that the bars are too flat for her back. They appear to be at about a 45 degree angle,
But judging from her shoulders, I'd say she needs something closer to a 50,
Maybe even a 55
As the saddle is right now, there will be a lot of concentrated pressure at the very top of the bars, which can cause soreness and scalded spots (the patches of white hair associated with poorly fitting saddles).