It was a good thing, the death of Thanos. Nebula knew this, but even good things could be complicated. Neither of them needed to say more for it than that though, Nebula did not have the words for what she felt for the man who had been the only father she'd truly known, and Stark was - well she still didn't know what to make of him despite the feeling that there was no lie about who he was.
Well it was a better name than some places she had seen in the universe. She nodded though, if he wanted it then he should keep it.
The suggestion that she should leave was not what she'd expected, she wasn't sure if she could take him with her, what would that do to the universe? Did it violate some law of physics and nature? For all of her understanding of time travel this was something that she had no experience with and no preparation for.
"Come." She said finally, "Come with me." Perhaps it would break something, to take him back, if it was even possible, but he deserved this chance. His family deserved this chance and if she could bring him back to what he'd lost - it was something she would do. "There is room for you there. Where I am from."