Some processes can be done 'by the book' where she doesn't have to be savvy, she just has to follow the instructions.
e.g. load up hotmail, enter "to" "subject" fields and then input e-mail.
Having little reminders of how to do things can help temporarily until she can use the knowledge more creatively.
Taking a short college course to grasp computer basics wouldn't be a bad idea, though if someone within your organisation has the time to commit, personal tuition would probably be better.