translation + だけは

Andromedashun said:

思ったことをそのまま口にしちゃうその性格だけは元に戻ってほしくなかったわ。。。
I not just only want you return originally to that character that saying frankly
what you think...

I can't think of a proper translation for 思ったことをそのまま口にしちゃう
And refer grammar: what is the role of だけは?

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Mike Cash said:

Are you working on a fan translation?

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Andromedashun said:

Yup, I'm doing a translation for a game.

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Andromedashun said:

^ Not really. I do this preferably for myself. I hope I can learn something by this. It is basically dead game anyway.

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Mike Cash said:

That's good.

Do you understand how だけ and は function separately?

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Andromedashun said:

Yeah I thought they are separated.
Is だけ ''only'' and は subject marker?

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