She's on HIS team, not yours. She hears the conversations, what the next big plan is, what's being cut, who cosying up to who. That's why there's a Secretary's Day, but there's no Nurse's Day or Fireman's Day. You might not like to know how much she's actually making compared to you. Knowledge is power but only Evil Assistants play politics.
Most assistants do move on to do more professional things later.
Buy the book or hear the authors read excerpts at MP3.COM .