Actually, I had heard that her ultimate fate, whether dead or alive, had not yet been decided. I think Sansweet mentioned it at Celebration Japan, but I'm not sure...
I'd kinda like to hope that they wouldn't kill her off, but it's almost a foregone conclusion. When I first heard that Anakin gets a padawan during TCW, I thought, "Oh, so she's going to die by the end of the series." Truth be told, I think there's a lot more thematic potential if she goes into hiding...then she could pop up in other EU sources.