The newspaper that Miko's teacher is reading is the same issue Raf used to make his volcano model with in Masters & Students (2011), even though several days or weeks have passed since then.
The pages in Miko's schoolbook are just mirrored images of each other.
The museum guard informs Miko that he has called the police and they are on their way. Given that he thinks she has committed a serious crime, one would think that they would be quick to arrive at the scene. Yet they never do, not even by morning.
After the museum guard catches Miko, believing her to be a thief, he doesn't bother checking on the exhibit to find out whether she's alone or if any of the displays are intact. What more, he doesn't even question how she managed to place her cell phone on top of the security camera on the ceiling.