That said, she'll still show her homework with 〜つつも

ミナ:

「まぁそんなこと言(い)いつつ最後(さいご)には見(み)せてくれるよね」

“Well, even though she says that, she'll show it to me in the end, you know.”

サナエ:

「学級委員長(がっきゅういいん)だしね」

“She is the class representative, after all.”

Key Points

1. 言(い)いつつ = “while saying that / even though she says that”

   • Here つつ marks a concessive idea: Mina means “even though Yukari says that now…”

   • The omitted も is understood from context, so the sense is still basically 〜つつも.

2. そんなこと refers to Yukari’s refusal

   • そんなこと points back to Yukari saying she will not let Mina copy her homework.

   • Mina is dismissing that statement as something Yukari says now, not as the final outcome.

3. 最後(さいご)には signals the eventual result

   • 最後(さいご)には means “in the end” or “eventually”.

   • It sets up Mina’s expectation that Yukari will still cave later.

4. 見(み)せてくれる adds the nuance of doing her a favor

   • くれる shows the action as something done for Mina’s benefit.

   • So 見(み)せてくれる is not just “show it” but “show it to me” with the giver oriented toward the speaker.

5. よね seeks agreement

   • The ending よね sounds like Mina is asserting her view while also expecting Sanae to agree.