Step 4: Observation!
So on the first day she made 14967 revolutions of her wheel.
Over the next two and a half days I was out of the house, and so didn't take daily readings and reset the counter every day. However, in those two and a half days, she ran through 40728 revolutions.
The day after that, I checked the pedometer to find that she made a whopping... 18!? For a second I actually feared the worst: the little creature must have pushed itself too far in her mad dash for her ancestral homeland and died of exhaustion! But no, upon closer examination of both the hamster and her wheel I realized that what actually happened was that she became wise to my spying ways, and circumvented my invention: both the pedometer trigger and the tripping mechanism were chewed to a nub!
Of course, at this point I could have just replaced the plastic pieces with some aluminum sheeting from a coke can. But I decided to respect her privacy instead (really, I was not being lazy, this didn't have anything to do with my getting a DS and becoming addicted to Zelda). So I'll be basing my calculations on three and a half days of observation, instead of the intended seven.
It's time to answer the burning question though!