Mirth

Talking about a book cover which Laura thinks is hilariously bad, we see a release of mirth.

She raises her left eyebrow in a show of irony, then she breaks out in a broad smile, raising both eyebrows.

She contains the emotion, making an effort to talk while suppressing a laugh.

Then the laughter breaks out, she flings her head back, screws up her eyes and smiles broadly.

She feels she shouldn't be laughing, but she can't help herself.