Some things/places to check:
-Whether she wrote it down either physically or digitally.
-Whether she posted it on any kind of forum/blog/wiki/email.
-Whether she has any screenshots.
-Whether she can contact anyone she used to play with that might remember.
-Whether she knows anyone who might have her on their friends list.
Other than that, contact support. As long as she can prove her identity (CD keys are the best way) then they should provide what she needs. The invalid email shouldn't be an issue.
Last edited by Marty Silverblade; Feb 21, 2013 at 11:22 PM // 23:22..