Complex sentence: The book ends with America finally realizing that she is exactly where she ought to be--among The Elite.However still not rejecting Aspen completly fearing being sent home and not having anyone to go back to.
Split into simpler sentences: The book ends with America finally realizing that she is exactly where she ought to be--among The Elite. However America still does not reject Aspen completly fearing being sent home and not having anyone to go back to.