Complex sentence: Her journalism lead a change in the writing of cinema criticism, to quote from the British Film Institute "... she was open to new directions in cinema and was not constrained by the middle class shibboleths of" good taste "...".
Split into simpler sentences: Her journalism lead a change in the writing of cinema criticism. To quote from the British Film Institute: "... she was open to new directions in cinema and was not constrained by the middle class shibboleths of" good taste "...".