[In-between the end of the party and the new rearrangement of the world, she's gone home - spent weeks there, and came back to find the place changed. So it's even more confusing... Although that is not why you can hear a very loud HOEEEEEE!! coming from somewhere near the large sakura tree in the park. If you follow the noise, you'll find her, flying, carried by what looks like a large transparent butterfly made out of a ribbon silk.
"Flight" is not taking the world switch well, so it's expressing its confusion by flying very energetically around, trying to find where it previously was. Which of course means poor Sakura is being dragged around in mid-air.
But you can also meet her a little later, once she's calmed her Card down and managed to get back on the ground. She'll definitely be interested in these changes, in the jar she's now holding, carrying many colorful candy already.]