Complex sentence: In the late 1920s Annie Bill denounced Mary Baker Eddy's writings, she wrote a new textbook called "The Science of Reality" which replaced her other textbook which acknowledged Eddy's authority.
Split into simpler sentences: In the late-1920s Annie Bill denounced Mary Baker Eddy's writings. Bill wrote a new textbook titled "The Science of Reality", which replaced her other textbook which had acknowledged Eddy's authority.