まあウチの早苗さんはICOも最初の階段で攻略見てたので、謎解き系は苦手なのかもしれません。
ちなみに4コマ目の答えは実際の謎のリアルな答えではないですよ。念のため。

Well, my Sanae-san was also looking at a walkthrough for the first level of ICO, so she may just be bad at puzzle-solving stuff.

The answer shown in panel 4 is not the real answer to the riddle, by the way. Just so you know.