Well if you see the newest video thats been posted on this forum, It somewhat is foreshadowing her dieing. She's being blasted, hanging on, and Anakin's watching from afar. Obviously this wouldn't be her death scene, but it could be foreshadowing it. I agree with your reasoning, I just don't think it's possible she's going to complete her training. The council made a big enough deal of Anakin being knighted at like 21/22 and he's the chosen one. If she was knighted at 17, I think Anakin would be more po'd then ever.