I made some updates.
But there is one bug that I still don't understand. The last page in level 50 persists in existing even after you collect it. The game even registers that she was caught (which is great). So it's just visual, don't be scared, guys.
And another thing, it only happens when I send it to steam, in the program I use to create games I couldn't reproduce the bug.
man, this is crazy.