In the Mirrorcole Caves, you will interact with your first mirror and have to do a mirror puzzle to advance. By making Melrose step on four portals, she will be teleported to the next area of the dungeon and can move on. The first time you do this puzzle, you will not be awarded with anything. However, if you choose, any time afterwards that you want to go back through the mirror, you can choose to play the mini game again.
There are a possibility of four different prizes. They allow a VERY generous amount of steps to be taken in order to win the prizes. You can win all four in one go by following these simple directions and finishing in 15 steps:
Go DOWN x2
LEFT x1
DOWN X1
RIGHT x8
DOWN x1
LEFT x2