After suffering from hallucinations from an apparent jellyfish sting during a practice swim , Sutton 's first inclination was to drop out of the race .
Sutton 's coach Sutton her to Sutton 's her fears .
After suffering from hallucinations from an apparent jellyfish sting during a practice swim , Sutton 's first inclination was to drop out of the race , but her coach convinced her to conquer her fears .