Howling:What did the silence mean when they said Amy would bring the silence?

In day of the moon, one of the silent says to amy "you are Amelia pond, we do you great honour, you will bring the silence. But you're part will soon be over". I thought they wanted to prevent the silence of the universe from happening i.e. Name of the doctor. --Coop3 ☎  20:22, July 1, 2013 (UTC)