Chatting with a girl, she suddenly stopped talking in the middle, and it took a night to answer my question. What does she mean?

This kind of situation is very common, which basically shows that she has understood what your motivation is! If you don't suddenly fall asleep, then she doesn't care too much about you. However, after a night, she still replied, proving that she can accept your pursuit. However, with this girl's personality, you must be not open-minded, have a feeling of being swayed by considerations of gain and loss, or you are not confident! Otherwise it won't happen, but don't slack off. These circumstances doomed you to fight a protracted war! Come on, brother!

The common situations are as follows: maybe she is a second personality; Desperate to save face, the highest self-esteem; You are not attractive enough to her; I like you very much, so I am careful everywhere; Have a good impression on you and pay special attention to your news.