This is Ami:

She’s a human who was cut/censored out of the anime, and never mentioned after the Gourmet Arc in the manga.
She’s involved in Furuta’s first appearance in the manga (other than his off-screen pushing of the beams). Basically, she is one of the two other ‘guests’ to the Ghoul Restaurant besides Kaneki (the other is a food critic).
She was lured here by her fiancé: Souta the Clown.

Basically, Souta/Furuta had promised to marry her, while feeding her tons of food (see any Rize parallels?), leading to her gaining weight. He then turns her over to the restaurant as a cruel, nauseating joke.
Kaneki tries to defend her, but unfortunately, Ami is also pretty ruthless and attempts to sacrifice Kaneki (again, see Rize parallels?). She’s also apparently a former track star, but despite her speed, she’s caught and killed.
I’m still mad at Furuta for that, though it’s funny how I went from feeling pure vile hatred for him, to intense love for his character. 😛