Outlook 2010 change default tab

When one of our users opens an email message in Outlook 2010 her default tab is not Message as it is for all other users. I have tried resetting her view but that did not fix the problem. We are not using Exchange. I believe they may have changed a preference but can’t find it to change it back to default. Does anyone know how to set the default tab in email messages to be the Message tab?