An Agent holding her helmet and facing a mirror.
She is in shock from seeing herself for the first time.
Another agent spots her or is spying on her.
Eager to report her to the higher powers...

The mirror is symbolic of looking into oneself and understanding oneself. Introspection or self reflection is frowned upon in the Corinthian state. It is the seed of rebellion.

Only the "Powers that be" are allowed to look into the mirror.
They are the most enlightened souls because of this.
They keep other people away from that knowledge
by forbidding mirrors or anything that can lead to
the development of an ego, intellect or self awareness.
And that's how they maintain and monopolize power.

Another agent on the right behind the wall has spotted her
and will obviously inform on her to the Higher Ups.

Original Sin is a reference to the first sin by Adam and Eve.