Why is there a である between a noun and というところだ?


> 「う、うむ！よろしくだ、シドーではない女！」 「……は、はい、よろしくお願いします」
> 頰に汗を垂らしながら握手を交わす。三人娘は少しだけ訝しげな顔をしたものの、まあいつもの十香 **である**
> というところで納得したのだろう、深く追及はしてこなかった。

The protagonist 士道/シドー, a boy, was dressed as a girl. His classmate 十香 easily
recognized him but 士道 asked 十香 to pretend not to know him because he did not
want the three girls to know he is 士道. 十香 happily did as she was told by
saying「う、うむ！よろしくだ、シドーではない女！」.

Could you please explain why there is a である before というところで?

<https://nihongonosensei.net/?p=11855>

According to the above link, when connecting a noun with というところだ, we don’t put
anything in between. So we should just say 十香というところで, it seems.

Thank you for any answer.




> まあいつもの十香であるというところで納得したのだろう、深く追及はしてこなかった。

The meaning of this sentence is: "They didn't pursue the matter further,
prescribing the odd comment (「う、うむ！よろしくだ、シドーではない女！」) to 十香's usual weirdness".

ところで describes "where" (in the abstract sense) the 納得 happened (similar to
落とし所). である means "to be", and here it comments that the behavior of 十香 is how
she is (usually).

So all combined, it says the three girls formed a mental comment that the odd
behavior fits with 十香's character (いつもの十香である), and goes on to say they 納得ed at
this thought.

