It made no sense, if the Keyblades could do more, that they hadn't been ordered to use that more..... Something to think about. Later.

Eleven had helped her. So she only hesitated a moment before facing him. "I never was a Somebody. I've never been a person. I was built out of the memories of Roxas' Somebody. I've never had a heart to be returned to me. I was an experiment to harness the power of the Keyblade, so that Xemnas could have two of them at his command. But the experiment failed, and I was less than useless."

All of that was spoken very matter of fact. A simple and obvious truth.