Sorry about your friend. I think you can ask google for some IP traces. I am sure they have the IPs.
This is why it's better to have your own email
name@yourdomain.com + to use OutlookExpress or other POP3 client. By using a POP3 client , the emails will not remain on the server. Also by using your domain name, even if someone hacks your account, you can reset the pass in few minutes.