Then she took me into another teacher 's classroom so they could eat . Then the teacher was saying something that was funny , and I was laughing , and my former teacher kept looking at me while she was laughing . Then I looked at her , and she looked down and smiled .

Give answer the following question using evidence from the above passage: What may be the reason why the teacher did n't want the student to see her laughing ?
She wants to be taken seriously .