(SPOILER)Nora says "mums are though" twice.
The first time it makes sense since she was trying to protect Hope.
But on the second time itīs out of context.
What is the logic of saying that after saving Snow?
In this case she was not doing anything specifically to protect Hope.
She had the strenght to do that not because of motherwood.
She was protecting the faccion leader.
Unless...
She smiles before she falls by the way.