Complex sentence: Each of the younger girls is more mature, and not as rebellious in general in the books, leading some to speculate that 1-2 Michelle books could arguably be better suited for the TV and not the Book Universe.
Split into simpler sentences: Each of the younger girls is more mature, and not as rebellious in general in the books. Some books have the girls closer to the TV Universe characters, however, leading some to speculate that 1-2 Michelle books could arguably be better suited for the TV and not the Book Universe.