Why does my girlfriend sometimes get angry when I talk to her halfway? Then she didn't reply to me until tomorrow, sometimes even days or weeks.

This proves that your girlfriend needs your love and care every day. Some girls are really like this. She thinks you are the one in her heart, so she will let you follow him all the time, and he will always be there. Snuggle up to you, that's what women do. When it's a big deal, your mind is full, so it's normal for you to treat this situation, which basically shows that she has understood what your motivation is! If she didn't suddenly fall asleep, then she didn't take you seriously. However, after a night, she still responded, proving that she can accept your pursuit. However, with this girl's character, she is definitely not you.