Complex sentence: To escape Lot's unwanted advances, Morgaine leaves Lothian and returns to Arthur's court as a lady-in-waiting to the high queen, Gwenhwyfar, and does not see Gwydion again until he is grown and a Druid priest.
Split into simpler sentences: To escape Lot's unwanted advances, Morgaine leaves Lothian and returns to Arthur's court as a lady-in-waiting to the high queen, Gwenhwyfar. She does not see Gwydion again until he is grown and a Druid priest.