Gerty Farish, the morning after the Wellington Brys' entertainment, woke from dreams as happy as Lily's.

If they were less vivid in hue, more subdued to the half-tints of her personality and her experience, they were for that very reason better suited to her mental vision.

Such flashes of joy as Lily moved in would have blinded Miss Farish, who was accustomed, in the way of happiness, to such scant light as shone through the cracks of other people's lives.
Now she was the centre of a little illumination of her own: a mild but unmistakable beam, compounded of Lawrence Selden's growing kindness to herself and the discovery that he extended his liking to Lily Bart.

If these two factors seem incompatible to the student of feminine psychology, it must be remembered that Gerty had always been a parasite in the moral order, living on the crumbs of other tables, and content to look through the window at the banquet spread for her friends.

Now that she was enjoying a little private feast of her own, it would have seemed incredibly selfish not to lay a plate for a friend; and there was no one with whom she would rather have shared her enjoyment than Miss Bart.
As to the nature of Selden's growing kindness, Gerty would no more have dared to define it than she would have tried to learn a butterfly's colours by knocking the dust from its wings.