It seems to me the only thing possibly problematic with this is that her staff members did it. There’s nothing wrong with someone advertising their work. Presumably her staff is hired to assist her work on the court. Maybe, like a college professor, a part of her duty is to write books and articles for the public and members of the legal profession. So, having her staff hawk her books to libraries is justified. If she had written a detective novel and had her staff push it to libraries that might not be proper. Since this is a scholarly work, university libraries are a logical place for it. Maybe selling the book is a job for the publisher, but this seems completely innocent as it is.
It seems to me the only thing possibly problematic with this is that her staff members did it. There’s nothing wrong with someone advertising their work. Presumably her staff is hired to assist her work on the court. Maybe, like a college professor, a part of her duty is to write books and articles for the public and members of the legal profession. So, having her staff hawk her books to libraries is justified. If she had written a detective novel and had her staff push it to libraries that might not be proper. Since this is a scholarly work, university libraries are a logical place for it. Maybe selling the book is a job for the publisher, but this seems completely innocent as it is.