No matter how many angles Rachel tried to view the situation from, no matter how much she wished to dismiss it as a cruel joke or a twisted dream, the reality before her was unchanging.
So, Rachel made her decision.
She chose between her cold desire to avenge her loved ones and the warmth of her memories with Arthur.
Besides, she had little in the way of choice.
Her reactions, the way she zoned out, and her expressions.
From those three, it was clear to even a blind man that she recognized the Silver Summoner's real identity.
When she heard Arthur's name and let out a dumbfounded "Eh?", it drew the attention of the Lieutenant General.
With his experience in reading people, he quickly discerned what Rachel was feeling from her reaction, her expression, and the look in her eyes.
'Shock, disbelief…and recognition.'
And something else he had discerned with clarity.
'She didn't know.'