Fierce Milly and the Swizzled Eyes by Marilyn McLaughlin
Fierce Milly says her eyes popped right out when she sneezed with them open. Now she has swizzled eyes and can enslave anyone just by staring! Fierce Milly tries enslaving sworn-enemy Cecil Nutt's granny. Only trouble is, Cecil Nutt catches her and challenges her to a staring contest. Fierce Milly loses and is forced to give up being Fierce. Until, that is, she is called upon to rescue next door's cat from up a tree. Cecil bets her he can beat her to it but when Milly produces an old sardine sandwich, the cat comes running and Fierce Milly is once again, Fierce Forever.