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.

[b]Not Dead. Missing in Action[/b]. No one seen her dead body.

The grimoire confirms her as dead. Not sure which card says so

"We have their leaders, the rest await execution." "No, I will take them all."

What if Mara Sov is somehow related to Savathun?

THANJS FOR THE SPOILER!!?1 [spoiler]kidding[/spoiler]

In the cutscene just before Oryx's deathblast hits her ship, her eyes stop glowing all together. This could mean she channelled a great deal of power through her to survive or maybe it means that the Dreadnaught attack started to kill her before the blast actually hit the ship. There might be more reasons as to why her eyes stopped glowing completely, but I still think she survived

hunters are reviveable (is this a even a word) why not mara?

They will bring the queen back. Look at what bungie did what sergeant johnson: we all thought that guy got turned into the flood and he came back in halo and they just came up a reason for it that made sense. The queen is a fundamental character in the story, and i believe bungie will bring the queen back.

Why no taken awoken?