This was a cute little game, though I did get a bit confused on what the ratio of spin to self confidence was. I'm not entirely sure on how all that correlates to one another. It's also a bit awkward having to stop spinning and then just... wait until she slowly comes to a dead stop before the upgrade screen pops up. I think if she stopped faster, or if you could go into the shop to get your next upgrades ready while you're waiting, it'd feel a little more fluid to me.
Anyways, I did enjoy this. It was simple, but fun. While the waiting was a bit much, it did spark me to start making a song with the background track. The verses sucked, but I got a halfway decent chorus in there, which was fun giving her a little personalized summer song. Shirley is going to be going places in Grade One with all that self confidence we made, I'm sure of it. She'll at least be more confident than I was, that's for sure. Great work on making this!