What does the author say about Julian and his mother being similar on page 67?

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Sentence?

Author’s Meaning?

"So that's it ?" I said.
"That's like . . . five people."
"That's more than five people, Auggie. I think a lot of people just had plans already," Mom answered. We were in the kitchen. She was cutting one of the apples we had just gotten at the farmers' market into teensy-weensy bites so I could eat it.
"What kind of plans?" I asked.
"I don't know, Auggie. We sent out the evites kind of late."
"Like what did they tell you, though? What reasons did they give?" "Everyone gave different reasons, Auggie." She sounded a bit impatient. "Really, sweetie, it shouldn't matter what their reasons were. People had plans, that's all."
"What did Julian give as his reason?" I asked.
"You know," said Mom, "his mom was the only person who didn't RSVP at all." She looked at me. "I guess the apple doesn't fall far from the tree."
I laughed because I thought she was making a joke, but then I realized she wasn't.