I'll bet everyone thinks she's dead, and the crows report that she is dead, but her death was very anti-climactic, and it vaguely shows the ketch being destroyed. I think she may very well still be alive due to some mysterious powers of the Nine. Since everyone thinks the queen is dead, this would be a perfect opportunity to do a plot twist, which would make the story actually interesting, instead of being the lazy, dry, cliche, and predictable story it is now. I have a feeling that if she actually died permanently, Bungie would've made them actually talk in the cutscene. But instead, it's just a commentary, like "I am the queen of the Awoken. This beast wants to rule us. I kneel to no one." I have a feeling that the reason why Bungie made it a commentary is because if it revealed what they were actually saying, it would reveal some secrets about the Nine. And that she was preparing to do something with the Nine's help that she would survive. Maybe now, she is a part of the Nine, even though her body was destroyed.