[ From anyone else, she might take it as flirting, or at least teasingly respond to it as such. From Lan Xichen, it just pulls her expression into a wider smile.

Grace braces her arms on the table, both to give him a thoughtful look and to take a second to put her thoughts in order. ]

If I may...I think you do. I think something is bringing you to second-guess yourself, but the core of what you know is still there. It can't be shaken loose so easily.