I hope you get your friend back! I know what it's like to lose a good friend. I sadly don't think I've heard her username before, so just stay online and wish that she comes back. I suggest trying to get on a different time, and once she is on, tell her your gmail/another chatting and common used site (Facebook/Twitter) and that way you have a often-checked way to message each other, which is actually a way I got back to one of my friends. So good luck and I hope you find your friend!