She didn't get KC through the normal routes, any Attorney General is automatically appointed as KC on taking office. All she had to do essentially was persuade Johnson into appointing her, and as most of the more competent lawyers in his administration had walked or been booted he didn't have a lot of choice.
When she was at the Bar she was not respected. I know a solicitor who still shudders at the memory of the time she dealt with one of their cases because the barrister initially instructed was unavailable; they didn't go into detail, but said that after that experience Braverman went onto the firm's list of barristers who must never be instructed under any circumstances.
On one of the few occasions when she represented the government in court she failed lamentably. Joshua Rosenberg's comment on it is very accurate (the first part of the quote in italics is from the judgment):
"In this case, however, the argument advanced by the attorney is that the sentence of Long, and therefore the sentences on Bowers and Cole, were unduly lenient because the judge erred in failing to depart from the relevant guideline.
That is, to say the least, an unusual submission. It involves the proposition that in the circumstances of this case, a sentence within the guideline offence range was not within the range properly open to the judge, who was instead required to pass a sentence outside that range. We think it regrettable that, in advancing that submission, the structure and ambit of the guideline were not addressed. Nor was any sufficient explanation given why it is contended that the judge was not merely entitled to depart from the guideline but positively required to do so.
Don’t be deceived by the understated language. As many lawyers pointed out on Twitter this morning, this is as scathing as it gets. “Unusual submission” is code for “monumentally bad point”. This was “coruscating”, others added, “damning”, a “judicial kicking” and “hugely embarrassing”.
And she has continued to demonstrate a basic lack of understanding of fundamental principles of law and the constitution ever since.