She can have the setting in her browser that clears the cookie each time she closes the browser.
What OS ? I have noticed that Linux has one login more often than I expect. What happens if the user opens a browser and goes to the TS server ? Kill the browser and do it again ?
Wow... now that you mention that, I just logged into our TS server. Closed IE. Opened IE, and it said "the session has expired" and is requiring me to login agin..This is not the email workflow, but is actally logging into the CCPro Teamsite interface.