For NVR, it is the CGP practice papers (red colour cover) I would recommend, the difficulty is close to the real exam one, except that your DD need to practice with substantial less time, real exam was 2 NVR sections, 4 minutes for 9 questions per section. Arguably NVR has the most weight per question in the first round exam.
For VR, probably use the similar CGP practice papers (CEM+GL), even the provider is GL, the HBS prescribed paper has new type of VR questions every year, so be prepared for the surprise, practice shffule sentences may help, more importantly is mastering vocabs. Real exam was about 34 questions.
For English, normally HBS GL paper doesn't have SpaG section only MC comprehension questions. Again prepared for the time pressure and MC techniques. Last year it was a chapter from A Stitch In Time by Penelope Lively. But in the years before I heard the paper did poetry regularly. About 24 questions?
The first round exam were taken place across 2-3 days with the exactly same paper, hence it is likely some girls sit in the later day to have some advantage by knowing the comprehension chapter and the new VR surprises. I heard stories (unproven) that some parents will pay other DD (exam tourist) who sit earlier day to gain info for the marginal advantage. Though this is something beyond your control.
HBS entrance exam has strong focus on English. More so since they changed the format to GL and get rid of maths section. Some strong maths candidates, if not in first round top 10%, will be out. In the past 2 years HBS had negative marking MC maths questions in the second round. But within 3 miles candidate second round result is not that important historically anyway.
Im sure there are some telegram groups (mostly organise by Asian parents) had detailed analysis on the historical paper content, type of questions, the intensity of practice for quite some time.
For this particular entrance exam, since the scale of dedicated prep and the skewness of subject focus, as well as the small number of questions with individual timed sections, it creates a large degree of uncertainty on the exam day, your DD would need luck. We saw cases that perceived strong academic girls (top prep school well tutored for grammar and indie) not pass the first round but passed other top selective school exams with flying colours. On the other hand we know some cases that girls haved yet developed good maths gets in but didn't manage to get offer/second stage from any other schools. Anyway in our experience (and by any measure of odds) this is the most challenging 11+ exam of the country, so please be realistic with the expectation and have a good alternative plan.
Good luck.