That the knight-at-arms in this poem has been enchanted, enthralled, is immediately suggested by his wandering in a desolate wasteland where the plant life has withered and no birds sing. He himself is in a decline; he is pale and the rose in his cheeks, like the sedge, is withering. In trying to explain his state to his questioner, he makes us highly suspicious of the lady whom he encountered. What is there in his description that makes the lady sound dangerous?
To start with, he identifies her as a supernatural being, a `faery's child' with `wild wild eyes' suggestive perhaps of madness. She speaks a strange language, and in her elfin grotto she lulls him to sleep. There may be a suggestion here that she is potentially treacherous since `lull' can denote an attempt to calm someone's fears or suspicions by deception.