Toph is just kind of standing outside the cell, not really sure what to do. Her heart is hammering against her chest, and with a croaky voice, she orders the men back a few paces.
Out of every possible thing that could have happened, having Azula sob brokenly into her daughter's neck wasn't what Toph expected.
She kneels just outside the cell, aware of everything. The two little girls in front of her, the officers whispering loudly down the hall.
"Lin," she whispers, voice croaky. "Lin, come away from there."
This is the first time Lin has outright ignored her.