Complex sentence: Achtland herself was a mortal woman, and as an adult she was infamous for her displeasure in what she found available to her among the human men, but when she was approached by one of the Tuatha, her heart was smitten with him.
Split into simpler sentences: Achtland herself was a mortal woman, and as an adult she was infamous for her displeasure in what she found available to her among the human men. It is said that no man could ever satisfy her, but when she was approached by one of the Tuatha, her heart was smitten with him.