I talked with Bai Tong and her grandmother about her behavior such as not intend to study in classroom, homework and her mother often took her to school late in the morning of Monday. Bai Tong told me that she wanted to be in school than her home, because she stay at home alone when her mother worked.
For classes, sometimes she does not understand English, so she can't work. And in math, she felt stressed for time test.