I said it elsewhere, but I'll reiterate and expand here.

Getting emotional, crying and running off does not necessarily merit penalty points in a human interaction, and certainly not for 12 year old girls who have recently been threatened with a lengthy term of prison/torture for attempted murder of someone who she recently discovered wanted to do horrible things to her, and then finds that her best friend and savior had a hidden and close relationship with that someone. Threats to security, violation of basic trust and in group solidarity, where the stakes are a torture death for her and the allegiance of her best friend and savior, who she had recently resolved to stick by in the face of a persistent threat to her own life.

Maybe the inside view of that would be hugely emotional, and might impair dispassionate thought a tad?

Me, I think it was a narratively appropriate scene for him to reintroduce a little cliched comedy. It was a little overdone on both sides for comic effect, but that's how you make comedy. I thought it worked. I thought it was fun. I think he tends a little toward slapstick with his comedy, and it's not intended to be taken as entirely realistic character development.