Certainly not horrible ;)
I see that she is a little long in the back, a little upright in the shoulder, and her neck is overmuscled on the bottom (very common and fixable with proper riding).
Her legs look straight, with good bone and nice feet. Her flat croup is just the angle at which the tailbone and end of the spine is set, and has nothing to do with hind end funchtion. She actually seems to have quite normal pelvic slope. She also looks shiny and well-cared for. How is she when ridden? One of the best indicators of conformation is how the horse is able to perform under saddle.
I wouldn't worry what other people say. People who don't know or like arabs won't like her conformation just because it isn't like the horses that they are used to. I think she looks fine, and I really like her typical arab feet :)