Answer
The answer is as follows. 
Katrielle and the Millionaires' Conspiracy walkthrough
Puzzle Location: Liza's room (The lighting in the right of the bed)
There is an ant at one edge of a thin board and it wants to get past the crickets on top of the board to reach the sugar cube at the other end.
Connect the points with straight lines to find the shortest possible route.
The ant can move anywhere, but the crickets won't move from their current location.
Slide the ant to move it to a point and decide the route it will travel.
Where are the places with no crickets?
If you only go by what you can see, you won't be able to find the shortest route.
Think about what you could do if you were an ant.
It there's a top, there's always a bottom.
The crickets are only on top of the board.
Ants can walk on the underside of surfaces too.
Let's help this little chap find the shortest route.
The answer is as follows.