Nope.The English translation is correct. She said 平仮名一文字って確か職員専用の…[Hiragana hitomoji tte tashika shokuin sen'you no...], i.e., a single hiragana on a door in Tokyo Station shows that the door is the entrance of a shop for employees only. For instance, "り" refers to 理容室 [りようしつ] "barber shop", and "し" is for 食堂 [しょくどう] "dining room". Similarly, と means that the shop is 時計屋 [とけいや] "clock shop (for employees only)".