You can do it today.
There's no physical presence requirement for PR minor children of Canadian citizens.
When did she get her PR ? Was it when you got your PR ? Did she ever land at the time ? If she got her PR before you becoming a citizen, you should have applied for her with you as physical presence wouldn't have applied to her. There might be a way for you to apply for her now, but I don't know for sure.
However, if she got her PR after you became citizen, through sponsorship for example than the below is more likely the apply.
I do not think the above applies for kids applying for citizenship without one of their parents. In that case, the children don't have the requirements but their parents do. They automatically get it with their parents.
But if the child is applying alone, he will be required to have physical presence even though some exceptions might apply
Check
https://www.canada.ca/en/immigration-refugees-citizenship/services/application/application-forms-guides/citizenship-minors-subsection-5-11.html for more info
This actually makes sense otherwise the the process wouldnt have required getting PR before applying for citizenship.
Of course I am not an expert in this regard nor have I had any experience with a similar situation. So I can't confirm any of this.