Mildred Lawrence works at the top of the teenage romance form, presumably from the premise that the girls who read her books are reasonably intelligent and welcome laughter. (See Drums in my Heart (1964), Girl on Witches' Hill (1963). Her characters achieve a degree of realism and her dialogue has the ring of conversation. No Slipper... has for its heroine an oversized girl. As if this weren't burden enough, Meriel Chapin is also aggressively intelligent. Too many inches and too many I.Q. points threaten total misery for a girl just starting college. A new stepmother, with the help of her son, gets Meriel in shape as far as diet, dress and posture go, but years alone with her father, a college professor, have left Meriel with a need to excel scholastically without knowing how to do so gracefully. It's real enough to feel and fiction enough to end happily and often it is very funny.