It’s difficult to determine the exact meaning of a girl’s fast reply in 800 words without additional context. However, here are a few possible interpretations:
She is enthusiastic: If a girl is replying quickly in a lengthy message, it could indicate that she is enthusiastic about the conversation or topic at hand. She may be eager to share her thoughts and engage with the person she is messaging.
She has a lot to say: Alternatively, a fast reply in 800 words could indicate that the girl has a lot to say on the subject. She may be trying to provide a thorough response or share a detailed explanation.
She is efficient: Some people are simply more efficient communicators than others. A girl who replies quickly in 800 words may be efficient at expressing her ideas and thoughts through writing.
She wants to make a good impression: In some cases, a girl may be replying quickly and at length in order to make a good impression on the person she is messaging. She may be trying to show that she is intelligent, thoughtful, and engaged in the conversation.