Now, she's been in the courtroom, I gather, so I assume she learned those basics. Not sure what basics Frank thinks she didn't know back in law school, but that is why you go to law school, and then why you become a junior associate...to learn those things. Not too surprising she might not know everything in law school, especially if she hadn't taken trial advocacy, or evidence, or civil procedure yet.
I don't know the percentages, but I bet that most lawyers don't ever argue a case in court. A lot of law is practiced outside the courtroom, with the goal of keeping the client out of the courtroom. So, many lawyers never learn courtroom practice fully, and if they need a courtroom lawyer, they hire a specialist. I once saw a litigator from a top national firm show up and botch a private negotiation (outside the courtroom), so I suppose I could say he didn't know the basics of how to negotiate a legal deal outside the structure of motion practice in the courtroom, and I'd be right. I never thought knowing motion practice was a hallmark of intelligence; it is a tool you learn if you need it. Not all doctors are surgeons. Not all surgeons have good bedside manners to be a pediatrician. Most of them are reasonably smart, though.
I can't speak to Ms. Habba, though...except to say that she is probably a lot smarter than the person Frank voted for to be president.