A Plan Backfired

So lately we've been having trouble with Gabby staying in her room after we put her to bed. She comes out at least three times every night for various things. Basically, she's a staller, and a very good one. So I came up with a plan that I was pretty sure would work. Tonight when she came out I said in a very pleasant voice, "Well, since you keep coming out you must not be tired, would you like to come down and do some chores?" To which Gabby responded "What chores?" and I said, "Oh I'm sure I can find something." I expected her to say no, that she wanted to go to bed. But no, she wanted to come down and do chores, so I set her to work cleaning out the fridge. I was still pretty sure that after a few minutes she'd be tired of it and ready to go to bed. Wrong again. She had a great time. She sang while she scrubbed and had a big smile on her face the whole time. Then when she was done she wanted to do something else. I told her no, it was time for bed because it was already 8:30 and she had preschool tomorrow. She then proceeded to throw a fit because she wanted to do more chores. But at least my fridge is clean, right!