How does Aisha's behavior and demeanor change in Section 9: Chapter 11? How does Taslima's?

Aisha becomes obsessed as they do not receive a response to their letters, and she soon stops going out and begins skipping her school activities and avoiding her friends. Taslima also slips out often, and she confides to Nadira that she has not been going to class because she cannot pretend things are normal.