New assignment. Large company VP of the finance department follows me into my once a day bathroom use and sits and listens to me pee/poop. She's done this 3 out of the 6 days I've been in the office. Today she followed me in (a minute after her snarky comment in the kitchen about me missing the train to work) and then, after about 1.5 minutes of her silently sitting in the neighboring stall (I timed it), I heard her start straining to get some urine out to make it look like she was actually there to use the toilet. Previous two days stalking me she peed without strain.
It's a 3 month assignment. If I quit, the company that placed me there will never place me again. Ideas?