Difficult sentence

When Marilla started speaking, she didn't know if she was going to apologize or disapprove.

Thanks a lot AlpheccaStars!!!

But I get no hint even with your explanation.

Is it to be understood as: Marrilla opened her lips to say that "she knew not what of apology or deprecation." ?

Is the sentence "She knew not what of apology or deprecation.", correct one?

Could you give some tip or analysis on the structure of this sentence?

It is difficult to understand the structure of the underlined...

Marilla opened her lips to say she knew not what of apology or deprecation.

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I feel like it has to be like below, with "was" added.

Marilla opened her lips to say she knew not was what of apology or deprecation.

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As this was written by a famou

"Anne of Green Gables" was written by a Victorian writer. It is very formal, even for those times. We don't use these old styles any more.

Oh, I see.... I see...

Thanks so much, Alphecca Stars!!