Yes, it does make you wonder, doesn't it? All that fuss about Arwen's choice--and yet there are those to whom such a choice is never even offered, such as Gilmith. I like the association with Firiel.
Her pose and the expression on her face do seem to express that conflicting heritage very well.
And the whole thing has got a southern feeling to it, that's convincing as being set in Dol Amroth.