And does anyone have anything from M. Gilliard's memoirs regarding her?
Gilliard on his first meeting with Tatiana in autumn 1905:
"The second girl, Tatiana, was eight and a half. She had auburn hair and was prettier than her sister, but gave one the impression of being less transparent, frank, and spontaneous."
Gilliard on Tatiana's character (chapter 6):
"Tatiana Nicolaievna was rather reserved, essentially well-balanced, and had a will of her own, though she was less frank and spontaneous than her elder sister. She was not so gifted, either, but this inferiority was compensated by more perseverance and balance. She was very pretty, though she had not quite Olga Nicolaievna's charm.
If the Tsarina made any difference between her children, Tatiana Nicolaievna was her favorite. It was not that her sisters loved their mother any less, but Tatiana knew how to surround her with unwearying attentions and never gave way to her own capricious impulses. Through her good looks and her art of self-assertion she put her sister in the shade in public, as the latter, thoughtless about herself, seemed to take a back seat. Yet the two sisters were passionately devoted to each other. There was only eighteen months between them, and that in itself was a bond of union."
You can read the full text of his memoirs,
Thirteen Years at the Russian Court, here:
http://www.alexanderpalace.org/2006pierre/