In spite of what the world tended to think of her, indeed how she tended to portray herself even, Gamora wasn't heartless. She didn't like feelings most of the time. She didn't know what to do with them or how to process them at all. She tended to shut them out, turn them away, or react to them as to distance herself from them as quickly as possible. It's why, still, she'd never, and would never, let Mantis touch her. She didn't want to have feelings and certainly not have them exposed if she did. She wanted to lock all that up tight, the same as she'd been doing since the Reapers, the same as she'd been doing since Con-Ret.
But she couldn't do that with Nebula. Anyone else, even Peter and his particularly obnoxious talent of drawing it out of her, didn't hold up to how easily Nebula's reaction tore through her usual defenses.
"I know." She said quietly. "And if I could take you home, I would. If..." She stopped herself. Being so blunt before had only seemed to serve to upset Nebula and so Gamora would adapt. "I know it is not the same, but you do have a home here. It is the best one I can offer you right now, but there are snacks and games and Groot who I am certain would love to play games with you until we can figure out a way perhaps." Another pause. "You may stay in my room if you wish too. It locks and is very private. Or I can stand guard on your ship for you." Because Gamora, admittedly, was flying blind on what she might be able to say here.