When did the deletion occur?
Is she able to create a new account using a different email address and username?
If so, I would recommend a cookie and temp. files cleanout first.
Usually, once an account has been deleted there's very little that can be done about it, it's deemed final. I'm not sure why the account was deleted initially, Admin very rarely delete accounts, we find bans are more effective for our purposes.
If we can get some sort of timeline I will see if Andy can query the database and re-set the account up, but it's a very long shot.