What does an ellipsis mean in chat?

Anonymous
I was talking to this girl I'm attracted to on Facebook (I talked to her like twice in person and I want to get to know her) and everything was going well, she was laughing and posting smileys, but at some point she started using ellipses. Like when I said What have you been up to today, she replied: Nothing much.. Just went shopping. And when I asked her if she had family in Greece, (She's of greek origin) she replied Yeah.. my family is still there. And when I asked her if they were fine, (you know because of the protests and bad economy) she replied Yes they are now.. why did she use so many ellipses?
What does an ellipsis mean in chat?
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