What does it mean for a girl to give this "..." symbol?

Girls send this "…" symbol to show that they are speechless.

1. If you have been chatting interactively in front of you, then she may use this symbol, because she doesn't know how to reply to you, so she will use this instead.

2. If there is less interaction and you talk more, it will be clear on her that she is speechless for you, or she thinks what you say is boring.

Word-free correlation extension:

Being speechless is similar to being embarrassed. The original intention is to have nothing to say, but in the network it means that seeing someone or something means that you don't understand and have nothing to say, and you feel helpless to someone. Or you don't want to care anymore, you're too lazy to talk about it, or you have nothing to say because of worship. Sometimes you don't know what to say, just send this response.