He lets her take the page from him and studies her while she moves through her drawings, taking in her ears and hair (so much like that of the Elf that he remembers as Maitimo, Fëanáro's eldest son) but not commenting on anything yet. He is about to make a comment regarding Arnold but then Aubri says that one of the pictures is Arnold's father, and he moves around and to her side to look over her shoulder and see the picture that she is looking at.

"Why did you draw a lot of him?" He can easily see the resemblance (and really, it's not surprising. After all it is/i> him at some point in the future. Not 20 years, maybe, but still a future him.