You missed the point.  Your initial reaction to "not fitting in" was due to personality...which is similar to "I do not like you" because of superficial characteristics that have nothing to do with the job task at hand.  And it is that mentality that she faced in the legal world.  Pressure to act a certain way, dress a certain way, etc all according to a male white protocol.  It is only when clients start demanding diversity that the male white culture changes in the legal profession.

One can comment all day long about the legal profession being what it is and one needs to fit in or find another job.  But that misses the point that the legal profession is better off with diversity and when the legal profession is better off, our community as a whole is better off.

What is important is values and there is little in the article that indicates that the author's values were materially different from the rest of the firm.  But the firm seemed to miss those important qualities in her.