Yup. That scene was NOT an action scene. It was a tense, dramatic scene, intended to make us fear for Brienne's safety.
Seriously, out of Michelle Maclaren's GOT episodes, I don't think she has directed a single action-packed scene in the show yet. Nothing spectacular, anyway.
I can't comment about whether or not she directed action scenes in Breaking Bad, because I never watched Breaking Bad. But the truth remains that Maclaren doesn't exactly have a wealth of action experience, either.