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.
I'd save the one who's more in 
need of saving in that moment.
سأنقذ الذي يحتاج لمساعدة
أكبر في تلك اللحظة
Ich würde immer denjenigen retten,
der Hilfe braucht.
Ayudaría al que lo necesite más
en esa situación.
Ayudaría al que lo necesitara más
en esa situación.
Celui qui a le plus besoin d’aide
à ce moment précis.
In una situazione simile,
Eu salvaria quem mais precisasse
ser salvo no momento.
Надо спасать тех,
кто больше других нуждается в помощи.