Back home, the only school Jinx had came from Vander and Vi. After Vander's death and Vi's disappearance, any knowledge she gained came from Silco and he'd basically formulated her into a walking, talking weapon. It wasn't exactly a wholesome education even if Silco treated as a daughter and tried the best to raise her that he could. He'd still lied to her, which Jinx was upset about.
They pulled into the parking lot and Jinx bounced from the car and bounded towards the door. She pulled the door open and wandered to the counter. "Fries and a strawberry shake!" Jinx exclaimed. Thankfully, there was no one else in line because she probably would have cut in front of them.