"You know he'd have never allowed that." Nebula said shaking her head, that any of them had found their way free of his influence, with Gamora he'd have never allowed his favorite child to end her life before she could finish being of use to him.
"I tried to end him before he had the chance to find the stones." She confessed, "I nearly had him." The memory still clear in her mind, like every memory she had since Thanos had begun upgrading her. It hadn't been enough though, she had not been able to save her sister, and Gamora - she had given herself for Nebula. Told him where he could find the soul stone if only he'd stop torturing Nebula.
"You could have kept the location from him." Nebula told her, in that same quiet tone, letting Gamora approach her further. "You could have stood by and watch him take me apart piece by piece and kept the universe safe from him." She extended a hand toward her sister, but didn't touch her yet, leaving the final step to Gamora. She didn't need to tell Gamora that she hadn't done that of course, she knew what had become of her in enough detail to know that Thanos had found the stone, and it was because she had told him where to find it - to save her sister.
"You are-" She started and stopped unaccustomed to the intensity of emotion she felt for her sister, for the first time they were free of Thanos and they could simply be sisters again. "You saved me."