Thank you for sending me this, let’s answer some Halo stuff!
Some people think that Cortana was killed off because of the sake of Chief’s character development. I like to think of her death this way: Cortana has something big in store for her.
There’s a theory going on that Cortana is within the Domain (hence why the Warden Eternal referred to it as “she”.)
I honestly think that 343i wouldn’t just kill her off and say “she had a great run”. Rather than that, they might make her become this metaphysical entity that is merged with the domain.
Cortana does deserve more; you’re right. and she might receive more