"Let's go, I want you to meet some friends of mine!" "Hi, my name is Mariette!" "MARIETTE!, What a shameful girl!" I'm not actually sure how to translate this. "What a slut," maybe? "Don't you want to be one of Sandia Chan's friends?"
panel 2 "Why not? It sounds fun!" "Awesome!"
panel 1: "Let's go, I want you to meet some friends of mine!" "Hi, my name is Mariette!" "MARIETT
Panel 1 Come on, I want to introduce you to some friends. My name is Mariette, and you? Mariette! How cheeky! (Could easily be, "How could you?!) You don't want to be part of the Sandia chan fan club?
Panel 2 Why not? It will be fun. Great.
Of course, Panel 3 doesn't need to be translated. LOL.
I'll show you what Google translate says. Panel 1 Come on, I want to introduce you to some friends.