You're the only girl in the Glade, and you're Newts girlfriend. Gally was making fun of you, so you pushed him. You broke the rules since you technically hurt him. Newt, Alby, Thomas, Gally, Minho, and you are having a meeting about your punishment.

Gally: "I think we should lock her in the pit with no food for a few weeks."

Newt: "No, we can't do that. She's scared of being alone, so if we lock her in the pit, she'll have a panic attack, and I just got her to start eating regularly."

Gally: "Well, we have to punish her somehow."

Thomas: "I don't think we do, she didn't really do anything."

Minho: "And it's her first time braking the rules."

Gally: "I don't care if it's her first time braking the rules, she attacked me, of course she needs to be punished."

Newt: "She barely even pushed you."