"I'll teach you to feed from people," he warns her, even if he'll use these figments of computer coding to do so. She has to understand that. For the purpose of this exercise, they're people. "Alright?" he asks, holding her gaze, his fingers brushing her hand.

The figment of computer coding in question is walking by them, but it's alright. They can catch up to him whenever they like - or restart the program, but Klaus likes that option less. He's teaching her about people.