A friend gave it to me. That's great. How can I comment?

First of all, this talk is about "forwarding+comment", which is how she feels about what others have said. In fact, you don't have to worry too much about this kind of thing. Nowadays, many girls just like to pretend to be literary, and they don't have much ink in their stomachs, so they make a groan and brush a sense of existence. Since she needs a sense of existence, give her a sense of existence. First, you praise her talk, and then comment on "I like your silence+expression", "Silence makes people think" and "Knowing silence means knowing how to get along". Just send a word casually. It doesn't matter whether it makes sense or not. The important thing is that you responded to her talk, indicating that you are paying attention to her.