Best thing to do is probably to create a new user and use that instead. Make a new admin user, and a new normal user with the name she wanted to use. She should use the normal user, and should only log in as the admin user to install software or to troubleshoot. Also, she can delete the unwanted user, folder and account, when logged in as the admin user.
What do you think, folks? Good advice? I'm curious to know.