Complex sentence: Desperate for help and a place to stay, Kathy, sensing Lester's attraction for her, uses him to assist her in getting the property back; the two begin an affair and eventually he abandons his wife and children to become her protector.
Split into simpler sentences: Desperate for help and a place to stay, Kathy, sensing Lester's attraction for her, uses him to assist her in getting the property back. They begin an affair and he soon abandons his wife and children to become her protector.