The first two are a fantastic setting, but she needs some better light on her. She's flat and uninteresting, the city in the background dominates.
Of the rest, the ones I like are where you can best see the face in the art behind her. First, you get the interesting placement of two faces next to one another, and secondly she seems to be posing well and has some moderately interesting light on her in both of these. The one with the two eyes behind her just barely visible, she's just standing there looking like a lumberjack. Good model, wrong instant, in that one
Not bad for the 6th time out, though! She's super interesting to look at, you should definitely spend more time with her at that first location. Think about how she can dominate the frame without taking up very much of it. Would having her with a sword be too much? Probably, but I'd like to look at those pictures anyways.
I think 2 and 4 are most promising.
With 2 I would put more side lighting and cut the right side of the frame up to the square building on the horizon. You would get more visual balance and her shade would then play into the composition.
With 4 I would move her to the right and frame her at 1/3 using the wall face as a counterbalance , and I would ask the model to take a more similar pose to that face.