twenty minutes after eleven
She must be there waiting for me . '' The school was only two blocks away , and Patty covered the ground as rapidly as possible . But when she reached there Miss Sinclair had gone . Another teacher who was there told Patty that Miss Sinclair had waited until twenty minutes after eleven , and then she had concluded that she must have mistaken the appointment , and that probably Patty had meant she would meet her at the costumer 's . So she had gone on , leaving word for Patty to follow her there , if by any chance she should come to the school looking for her . Patty did n't know what to do . The costumer 's shop was a considerable distance away , and Patty was not in the habit of going around the city alone .