Переедите в косвенную речь "break at ten forty-five, dear," said the headmistress. "come straight to the staff room. i will wait there till you join us. i will introduce you to those you didn't meet on your first visit how do you like the idea of having a cup of tea then? we need rest after all. if there's anything that puzzles you, i shall be in my room. you can depend on me. just send a message by one of the children."

The headmistress announced that the break was at ten forty-five. And she told to come straight to the staff room. She said that she would wait there till I joined them. She promised to introduce me to those I hadn`t met on my first visit.  She asked if I liked the idea of having a cup of tea then.  She said that they needed rest after all. And she added if there was anything that puzzled me, she would be in her room. She said that I could depend on her. She offered that I just sent a message by one of the children.