What does そうするの mean here?

Question

I came across this phrase in Yotsubato! manga. (ch.82, pg.35)

Source: http://raw.senmanga.com/Yotsubato!/82/35

What does そうするの mean here (middle panel)? As far as I can tell, the の is most probably an explanatory の. I think it means "yea just like that" or literally "to do so" but the literal meaning somehow doesn't feel right. I think it is most probably "just like that" from reading the text bubble that comes before it but I am confused here.

I tried searching そうするの on the web but couldn't find much that relates to above context. As a phrase what does そうするの mean here? I couldn't find any more examples that use そうするの. Any examples would be welcome.

Answer 1

The の expresses 命令 (imperative/command). According to デジタル大辞泉:

の
2⃣［終助］活用語の連体形に付く。
３ 強く決めつけて命令する意を表す。「余計なことを言わないの」「遊んでばかりいないで勉強するの」

And 明鏡国語辞典 says:

の
㊁〘終助〙
❹ 軽く命じるのに使う。「さっさと着替えるの」「強い子は泣かないの」
◈(表現) ㊁は多く女性が使う... ④は子供など目下の相手に対して使う。

This の is a sentence-ending particle (終助詞) expressing a relatively light command. It's often used by females, normally towards someone who is inferior to or younger than the speaker.

そう。そうするの。
lit. "Yes. Do (it) that way."

So here the girl is talking to her dad a little arrogantly (but that might be how she usually talks to him?)

Answer 2

I understand it the same way as you said at first, but I also believe that here, the use of the particle の is used as an emphasis at the end of the statement (in a way I kind of imagine it like a です) and I think it's mostly used by girls or children who are more soft spoken.
The translation would sound like "I will do that" or "That's what I will do". Then she says
それでいい。。。 which would translate like "It's fine if I do that..." or "It's OK like this". Hope I got the nuances alright and I also hope that it helps!