No, I have not read the entire book. But both Charlie and Julianne were part of the documentary (Pression/Pressure) by the video journalist who is also the co-author of the book. Neither of them discussed anything like this. TBH I doubt that Julianne would have agreed to appear in the documentary with Charlie if she felt that he had been part of the abuse she experienced.
I agree that there are male pairs skaters who don't do their part of the work, so to speak. But I don't see the relevance of that to this particular story.