It was easy to feel annoyed with Gamora; she was the older sister, the better sister. She'd always been sharper than Nebula had and that meant, according to the petty part of Nebula's mind, that she should have had things figured out. And there was old resentment there, like old scar tissue that wouldn't fully heal, almost waiting to be picked on and flare up again. Anger was her old armor to get her through rough days, familiar enough that she could sink into it without thinking. Nebula wanted answers, wanted a solid plan but there was no such luck with Thanos. They could only mentally and physically prepare, try to find information on the Infinity Stones, such as there was, and wait.
Nebula scowled into the nothingness of empty space and tensed slightly at the feel of a hand on her shoulder. She watched her older sister walk, noted the tightness of her muscles. She reminded herself that none of this was Gamora's fault and sighed, cracking the slightest smile when Gamora mentioned the human food.
She hesitated a moment before speaking again. "At what point are they someone else's problem?" Nebula asked. She could allow the humans to take up some of their time, but not all of their time. "And you must realize we are a danger to them? If Thanos feels spiteful and finds us, he will come for the creatures that are stuck there to send a message." It was a silent fear, one that Nebula didn't like voicing much. But the retribution of Thanos was never far from her mind. She felt death was unavoidable for the sin of leaving her father and suspected that anyone she made connections with would be similarly punished.