Ment
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Why would they even compare it to a photo? It's just some woman; they simply didn't recognize her. It's strange to start pulling out photos and comparing them in such a situation, unless something specific triggered the memory.
They didn't become legitimate, but given our complicated situation, we can chalk it up to Tsukiko's absentmindedness. "Grace" won't be pleased, but I'll get over it; survival is more important.