She had some repairs done, had she not?

I do think that the question tag has been written in the sentence correctly since verb " have " is not used as an auxiliary.

She had some repairs done, had she not?

I think that the question tag has been written in the sentence correctly since verb " have " is not used as an auxiliary.

But I still believe it's just another error in one of my grammar books and, certainly, it can't be a typo.