Maybe she refused the water because it's in a glass and she would have spilled it all over herself on stage.
There should be a limit on how long anyone can work for the government ever. POTUS is limited to two four-year terms for a total of eight years. FBI Director (Mueller) was limited to a 10-year term. Ten years should be sufficient for anyone. And, they shouldn't receive any additional money when they leave, just take their 401k and go. That would allow all of us a term at serving our country at taxpayer expense.