Vivan can't seem to figure out how to get her Outlook email on her iPhone. Leo says first go to outlook.com and log in to see if she can get mail there. Once that's verified, then she should be able to go into the iPhone's mail settings and input all the login information into the mail app settings.
Settings->Mail->Accounts->Add Account. Then select the Outlook.com option and input all your login information. Then she will be able to log into the mail app and get the mail.