Flashback panel,
Peter offering Isabella a hand to escape from her fate, Isabella wants freedom.
2047/11/13 Isabella gathered all Mamas and said that she was informed from above that in two days, the GF escapees will come to raid GF House. She announces that she wants to betray the plantation, asks if someone wants to join her. When everyone was confused, she says she waited for one year and 11 months for the day. Obviously, betrayal here is a ridiculous concept, they have been taught this lesson by Sarah and it was passed down. "but look what happened to Grandma Sarah. She died in vain." if someone makes a mistake, whether it's mama or grandma-they're all treated the same. They're cattles. All of them must've realized by now that it's less a chance to exist but more a living hell. Obeying gives them no future.
She wants to escape. She's tired of being baited with chance of freedom. She accepted the position of grandma, knowing the children will come back and she will become a strength for them. Now they won't be bound by the rules anymore.
She informs the sisters/mama trainees that if they don't want to join her betrayal, she won't force them. But if they're with her, she'll show them something "fun." (not sure about this part)
Back to present time. All guns pointed at Peter and he has no ally. Emma exclaims "Mama!" Isabella notes how she still calls her Mama, so did Lannion, Yvette, Nat. She compliments them in her thoughts but she tells them that they shouldn't be mistaken, she didn't like their system so she wanted to crush it. (she won't ask to be forgiven and see doesn't deserve it, they have the right to resent her and she doesn't deserve being called 'Mama.') Emma looks around and sees all Mamas and Sisters as children, and says "Thanks, Mama."
Peter loses his mind and start firing after breaking loose and snatching a gun, says it's all lies, he can't lose here