It might seem like Zaynab is being combative here, but I hope it becomes clear that she’s just trying to keep Maida’s head on her shoulders.

↓ Transcript
Panel 1: Zaynab: "Maida! Are you sure it's Ibrahim?" Maida: "I think I know my own brother!"
Panel 2: Zaynab: "Then you need to tell your mum, yeh?"
Panel 3: Zaynab: "And your aunt. They deserve to know straight away, don't you fink so?" Maida, retreating in her panic a little bit: "Right. You're right. I'll do that first."
Panel 4: She brings the screen back up. Maida: "I'll tell them, but I'm not going to tell them I'm going to Luna, yet." Zaynab puts a hand on her shoulder.
Panel 5: Zaynab" "What?" Maida: "They'll try to stop me! I can get there faster on my own."
Panel 6: Zaynab: "Umm. Can you afford to go to Luna?"
Panel 7: Maida is crying a little. Maida: "He's my baby brother, Zaynab! I'll figure it out!"