Well, look at it this way: she was around back then, and no one else can make that claim. She was involved in the battle, and was prominent (or unlucky) enough to have drawn the attention of a Forsaken. Yet for all her potentially useful knowledge, it seems like Elayne, Nyn, Thom, and Juilin never even *thought* to question her heavily on what she may or may not know.

Even if she had nothing useful to say, the Ter'Angreal game would be one I'd force her to play. Wouldn't you? Just in the hopes that she might recognize something. And she would likely have known what a binder/Oath Rod actually is...