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“Superman *is* planning to stay in Metropolis, isn’t he?” Martha asked.

She watched as Lois and Clark exchanged glances, the meaning of which only the two of them knew. It looked to her like there was also some under-the-table hand-holding going on.

After a moment of this silent communication, Clark smiled widely and replied, “Yes. He’s staying.”
Ooh! *squees*

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Lois had a hunch who the child’s protector might be, but, whether she was Martha Kent or someone else, Lois wasn’t about to let her get pushed around by the bully who had already slugged his now-ex-girlfriend.
and

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Just as Lois was about to introduce herself to the woman she was almost sure was Martha Kent, Caleb came jogging up to the pair.
How does Lois know that it's *Martha Kent*? Surely she just thinks that the woman is Caleb's mother?