In the book I'm reading, the main character speaks using katanaka in suffixes,
part of the words and some particles, like:

> 待ってくだサイ
>
> ぶつかりマス
>
> どうしてでカ？
>
> どうして、ロボットの修理しないんでしょうカ？

I know katakana is also used for emphasis, but I'm not sure how I should
understand that: is the character stressing more that part of the word? Is it
just a graphical tool to give her character? Is it meant to be a defect in how
she speaks, and if so how would that sound aloud?

As context, the character is a robot: at the start of the book she is a very
high-specs robot, literally better than what you can find in commerce, but at
some point she ends up in an old model body, while keeping her high-specs
mental circuitry. Before that change, she speaks normally; after, she starts
with katakana.
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2021-08-13T13:06:42.037
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2021-08-13T13:15:26.077
2021-08-13T13:15:26.077
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question
katakana
Words half-written in katakana