Empty email box

What can be more terrible than all emails are missing? Unfortunately this seems happened to Vicky a few hours ago. Is this is a joke?! There is one possibility I can figure out that may cause her emails disappear - when Vicky read them this morning, she (actually the computer she used this morning) had moved all emails FROM EMAIL SERVER to the computer she used this morning. In most case this is due to the setting of email agency (such as Outlook Express). I emailed her and told her if she still need those emails then she can send back those messages from the computer to her own email box - as long as those messages are still kept in that computer (and make sure her email box still got enough space to receive messages; I know her campus email box has been full...:P ). I hope she didn't check her emails in internet cafe this morning, or there could be no chance to rescue her mails back...