Maybe, but I think she was just being polite. 


A: I think Ms. C really liked our presentation. She said it was impressive.
B: Maybe, but I think she was just being polite.
A: You don’t think she meant it?
B: Hard to say. Let’s wait and see what feedback she gives us later.

In this situation, what should you say ‘she was just being polite’ in Japanese?

Business

B:どうでしょう。ただの社交しゃこう辞令じれいだとおもいますけど。

Note: This is not a word-for-word translation.


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A word-for-word translation

B:そうかもしれませんが、彼女かのじょはただ礼儀正れいぎただしくしていただけだとおもいます。

Although it is grammatically correct, it sounds a little stiff and unnatural.

In Japanese, it is more common to use expressions that convey the nuances of interpersonal relationships.
For example, it would be more natural to say 社交しゃこう辞令じれい than 礼儀正れいぎただしくしていた.

社交しゃこう辞令じれい is a polite expression appropriate for the situation, but it may not necessarily reflect your true feelings.

So, ただの社交しゃこう辞令じれいだとおもいますけど nicely conveys the nuance of ‘a formal compliment that isn’t really what you mean’ in English — ‘just being polite’.

どうでしょう is a natural Japanese way of starting a sentence when gently disagreeing with the other person’s opinion.
This sounds softer and more natural in conversation and matches the tone of the original sentence.