"Yeah, I really don't mind that, so there's no need for you guys to keep arguing. I know you're all trying to help me - my big brother wants to teach me not to laugh in such situations because my laugh just now was indeed a bit impolite, and Mrs. Grant is also helping me. I know all this, so there's no need to argue. I, too, have a big heart and don't care about it, so let's just continue eating and not think about this anymore!"
Sophia didn't know what she said wrong; she thought her words were organized and sensible. But why did David laugh? It was because of laughter again that Sophia started to frown while speaking, wondering where she went wrong; she stopped with her mouth open.
David nearly choked with laughter. Seeing the confusion on Sophia's face, he thought that she probably didn't know the inside story and therefore didn't hold back as she spoke.