Why is Anna so worried about savushkin that she arranges to meet his mother?

Answer 1

She's not worried about him. She is going home to tell his mother that he is consistently late for school. She thinks that he is lying when he says that going through the forest is the short cut.

Answer 2

Anna is worried about Savushkin because he is her friend and he has been acting unusually. By meeting his mother, Anna hopes to gain insight into his behavior and well-being. She believes that by speaking with his mother, she may be able to understand what is going on with Savushkin and how she can help him.