Erika and Sakaki manage to escape from under Sensei with her mother's guidance. Apparently, she's been making preparations, little by little, for Erika to run away one day. Erika learns of thoughts and feelings she didn't know her mother had.
After making contact with Mikado and the others, Erika tells them that she wants Sensei to stop doing the work they do, not just herself. Mikado decides to help, but it seems that Hiyakawa can't understand Erika and Mikado's feelings.
Also, she sent us the Research 
Society's account ledgers
أرسلت لنا أيضاً دفاتر الحسابات
الماليّة لمجتمع الأبحاث
Sie schickte mir auch das Rechnungsbuch der Sekte
und das Handy von Vater und der Sekretärin.
Me envió la contabilidad del seminario
y los teléfonos de papá y su secretaria.
Me envió la contabilidad del seminario.
Elle m’a fait parvenir
Poi mi ha mandato i libri contabili 
della setta religiosa
E ela enviou os registros
contábeis da sociedade
Ещё она прислала бухгалтерскую книгу
ассоциации и телефон папиной секретарши.