My girlfriend's grandmother passed away yesterday. Should I go?

You should go there. Whether anyone knows you or not, how is your progress? As long as you want to maintain your relationship and make new progress, it is appropriate to express your relationship. I once read an article written by a man, a boy living in the countryside, whose father died. You know what it's like for him to go back to his hometown. It's very unpleasant, but his girlfriend didn't tell her that he had traveled a long way. This greatly touched the boy. No matter how many people send messages and call to express their condolences at such a difficult time, they are not as good as the one they love most, holding your hand. Even if you don't say a word, it is a great comfort to your heart. But it should be noted that your girlfriend's grandmother has a great position in your girlfriend's heart. If your girlfriend goes to her grandmother's funeral, it's purely out of politeness, so it shouldn't be of great use for you to express your condolences. However, there is no harm in going, so that your girlfriend can fully realize that your concern for her is not just superficial, but what you said, and there is nothing wrong with it. In addition, if something happens to a friend's family, express your condolences.