Stephen didn't seem perturbed. He waited until Nebula appeared ready to come to a decision, and nodded only once before he closed his eyes and looked as though he was readying himself to conduct a seance. After a minute of silence, he turned and opened a portal while saying, "I've located her. I'll be right back."
He disappeared through it, not bothering to close it all of the way as he walked toward Gamora. Instead it offered a peephole for Nebula to see what was going on, if she cared to look.
"Hello again. Sorry if I'm interrupting what you're doing, but a blue and purple friend of yours would like to see you. Afraid it's urgent." He remembered the welcome-to-Hell gift pack that he had tucked under his arm and held it out. "Oh, right. Here, take this. Give it to her after you convince her that we're in part of a splinter universe."