I heard Tash tell Nomi to calm down and walk away, implying that Nomi was upset and needed to get a grip. Tash's words reflected a kind of tough love or frustration, suggesting that Nomi should learn to handle her emotions better.
"I thought: You taught me that some people can leave and some can't," Nomi reflected, realizing that those who leave seem to have more control and are cooler, while she feels unable to leave. She feels alone, like an old man in an empty house with no one but herself, underscoring her sense of isolation and emotional struggle.