For some reason, the work reminds me of Bruce Davidson's subway series.
I understand your point of view, and it's always difficult for a new person to make pictures in the same kind of environment without drawing reference to earlier work in that genre.
One has to accept that being appreciative of another photographer's work does not necessarily imply plagiarism; especially in such volatile circumstances, close imitation is nigh impossible. Also, inspiration doesn't mean a slavish copying but, I hope, an appreciation that a particular form of travel (visually) is worth taking up.
I am not, of course, saying you accused the girl of plagiarism, just that it's impossible for anyone with a photographic background and a bit of curiosity in his soul not to be aware of similarities here and there.
Rob